If it's that easy why didn't you do it then? We should have plenty of competitors to SpaceX and Tesla with loads of reusable rockets and amazing self driving cars RIGHT NOW if everything seems so trivial in your opinion. Any dumbass can do it, including you! Time to get dirty and stack up on those millions of $ since things are so easy to pull off.

That's why Elon sleeps under the desk and works 18 hours a day because it's all very very easy.

I almost forgot how easy it was to sit on the sideline and critique someone else's work :) It's cute.