You needn't be the best sociologist or marketer in the world to know that this is completely wrong.
If you want "the heads of the general public, wealthy, influential (entertainers like movie producers, singers, actors) and leaders (heads of states, law makers, elected officials etc.)" to buy in, merely showing that "it will happen with enough support" is going to be a complete flop; You need rather to show what's in it for them.
Well that's the whole point. This
is for them: to insure the race, ease global pollution, ease overpopulation, ease geopolitical wars, live in space, travel space, create a better society internally, etc.
Why do I, as a wealthy and influential politician, want this to happen? Certainly not just because lots of other people think it's a swell idea.
Not just the power of the people, but if the plan is good enough, they would do it because it is more logical than not doing it.
It will be a promise for a better future for everyone.
I am a wealthy and influential politician. Me and mine already have a bright future; why would I put that at any kind of risk for the sake of a bunch of strangers?
One very big reason why I want this to happen so much is so we can ease population and geopolitical pressures.
Then you are clearly incompetent at basic mathematics.
Population pressures can be resolved by reducing birth rates; but they cannot be resolved by migrating to the stars.
Oh god, we are going to take an idea to an extreme again - sheesh.
So if the universe is packed with people, then the universe will continue to expand at a faster rate than we can reproduce. At some point, there won't be any matter left while space continues to grow.
Imagine a population that doubles every 30 years (This is pretty much what we had before the invention of the contraceptive pill). Now, let's pick a carrying capacity for the Earth - say it is 10 billion (it doesn't really matter what numbers you pick; the result is essentially the same for any carrying capacity and doubling rate, only the time-scales vary).
Now, in 1987, there were 5 billion people in the world. So in 2017, with 30-year doubling, the carrying capacity is reached. Now we need to move people off-planet. So lets terraform Venus - it's the same size as Earth, give or take; let's go the full Ryan on this, and assume that we can complete the whole job in a year, including building a fleet of spaceships to take people to Venus as colonists, and making Venus so liveable that it can independently support ten billion people. Problem solved!
Oh, hang on; fast forward to 2047, and - oh, shit. We have filled up Venus, and now we need to terraform Mars. Mars is smaller than Earth and Venus, but let's not be negative nellies; let's assume that we can make Mars fit for another 10 billion people to live. That solves Earth's problem. Oh, but we need to solve the Venus population problem too. Shit. Better terraform Mercury then. Another 10 billion on Mercury. Phew. Problem solved.
But wait! In 2077, we need to find four more planets to each take 10 billion people...
Do you understand that the colony will only be able to hold an x < 1,000,000,000 for at least the first few hundred years? An Octomom will have to choose between Earth with a bunch of kids or the spaceship - ahhhh, my sweet ship will filter out such stupidity!
Now you will probably scream "dystopia" after reading the last paragraph. It might be tough, but it's still better than our countries that keep starving children from all over the world out of our countries and leaving them for dead. In fact by not constantly sending money over their, people are letting children die everyday.
It is pretty obvious that moving people into space just doesn't solve the problem - within two centuries (180 years, if we want to be pedantic), you need to find homes for 320 billion people off-world; and thirty years later, for 640 billion. Even if we used all the matter in the solar system to build spacecraft capable of travelling at a sizable fraction of the speed of light, and we could terraform (or turn into hyper-drive spacecraft) every star and planet we found, we would run out of living space in a few centuries at best.
Nope, if you want to solve the population problem, you have to solve it at the source - either people have to die as fast as they are being born; or they need to be born only as fast as they die off.
Fortunately, with access to the contraceptive pill and basic primary education, women on average choose to have less than 2 children each. So the problem is simply that of getting them access to basic education and cheap, safe medication. No space program required.
But what about the fact that the technology is coming (my other passion) that will allow people to control their mortalities?
In my opinion, we need this to at least start if we want to extend our lifespans and avoid the future conflicts that geopolitics will feed indefinitely.
I used to think that money is reason for all wars, but I know now that it's geopolitics.
Well going into space will just make the problem astropolitics. It won't actually solve anything at all.
Um - nooo - because of at least two major differences from the geopolitics on Earth. One, nobody has claimed the space that we would reside in (unlike when the Europeans made their first encounter with the chief of the Kanata tribe who clearly gestured ownership of the land that the Europeans would soon squat in and take over). Two, countries will be mobile; the layering of ownership over the centuries of the same lands would not be as problematic. You can't make such wild comparisons.
And even without those three reasons, we learnt like a kid who touches a hot stove not to invade other habitats.