I have a more philosophical reason to think that this is ridiculous.
You ask people successful in the PRESENT, about the FUTURE. :-D
And what is even more ridiculous: you guys think you would understand or accept any correct answer! :-D :-D :-D
Just an example:
A guy escaped from the fascist Germany with the last train to England, just before the borders were closed. He had an idea in his mind that literally everyone thought was lunatic, not just ordinary people, but most of his scientist colleagues. He tried to patent it (in 1934 and 36) but it was refused. But the idea had military potential, so under the pressure of the war, a gigantic organization was created around it. This technology actually created our present, which is based on one thing: "cheap" energy.
The guy was Leo Szilard, the idea was the nuclear chain reaction. You smartly agree today (and blame the interviewer) because you have heard something about this at school and seen on films. But the important changes that future brings, are the ones that NOBODY EVER talked about at school, and they look just as ridiculous as a hump of metal bricks warm up by themselves. If those bricks were created by the best minds on the planet, and spending countless amount of money, called the Manhattan Project. Excluding any profit hunting and business reasons, but WASTING fortunes on a ridiculous idea.
Got it? This is how future is made in the real world.
If this currently hopeless human race has a future at all, it's not about big dreams and profit in any means (in which these guys are good at); but to merely survive the collapse (mental, social, cultural, ecological, population, ... - and finally, political and financial) to which we are heading, full throttle and afterburner. With Marvel heroes in our minds. This is also a recipe of future, but don't ask about the quality or smell... ;-)
If you dare to think about that for a second, you know the answer. This is why you turn back to dreaming after that second, or (perhaps) after reading this text. If anyone got this far at all.
... and yes. With merely seconds of real thinking, we have no chance.
But hey! This race got to space from farming in around 20 generations! :-)
Despite of all the facts, I still have a strong faith that we can do better than just falling off the cliff blinded by fairy tales.
Dare to take my red pill?