First you need to file all the paperwork. Then you wait. Once you get approvals, you can't do anything without a bank account, and opening the bank account is a lot of trouble too, because they want to triple check everything.

From zero to operational is a long way, and with lots of legal liability along the way. I have a company closed for 15 years that still counts as a liability to me when I try to do anything, like renting an apartment.

You might be right in "opening" paperwork only being kinda OK. But you certainly can't do it like the original poster, that codes for a week or two, opens a new business and move on to new projects in series. (Yeah, not every project of his is a new company, but IIRC the larger ones become new companies).