O visa is for exceptional ability and they really mean exceptional. So who qualifies for those ? people with scientific researches, publications, inventions etc. Not the average hacker.
No. EB5 category allows you to start your business but it has it's own conditions. You get a provisional EB5 visa during which you must invest $1M and employ 10 people to qualify for a permanent visa. Up until recently, VC funding was not a qualifier towards the $1M number.