I am in polite, respectful agreement with InfiniteSilence on this one, I think.   To put it extremely bluntly ... and hoping that you will take this in the manner intended:

1. If you don’t know what you are doing – exactly what you’re doing – don’t do it.   Don’t even begin to do it.   “Being in business” is not a bed of roses, especially in IT.   You need to start with a business plan, and then you need to get well-seasoned counsel to blow that plan completely out of the water ... two or three or twenty times ... until (and unless) you actually come up with something that is worth speculating money on.   (Most especially yours.)
2. Forget about “crowd-funding” or “donations,” etcetera.   If you’ve got an idea worth investing in, and you can prove it to a skeptical audience, then “the money is there ... with strings attached.”   (And if you were on the opposite side of that desk, looking to invest your own (or somebody else’s) money, you’d put plenty of strings there, too.   You’d be brutally honest, ruthlessly demanding, and rich.)
3. Until and unless that time comes, then I advise you to consider that you are “merely discontented” in your present job, but not necessarily prepared to embark upon creating a job for yourself.   Certainly by the middle of the second paragraph I had “dissed” your idea completely, and I am quite sure that others would do the same.   For the time being, continue doing what you know – get another conventional job, doing what you know, at somebody else’s company, so that you maintain a stable revenue-flow while you methodically explore and develop business opportunities.   Dropping into the water without a damn good life-jacket is merely a recipe for drowning, and you surely won’t be the first “hopeful” to have done so.   “A gadzillion dollars” is a cruel fantasy, and nothing more.   Stay ashore.

I’ve been in-business for twenty-two years.   I have thousands of customers worldwide, but the gadzillion-dollars boat still hasn’t shown up at my dock, and I don’t expect it anytime soon.   Forgive me for being blunt, and perhaps for being utterly and completely wrong.   I would be delighted to be utterly wrong, but I would not gamble on it ... nor should you.