I bet you can ipo at a higher price with a spac as you only have to negotiate with one shareholder who doesn’t have a strict profit motive.
Another option is a reverse merger where an existing registration (public shell) can be cleared out for the new entity.
Man speaking about one of the first ones in the industry : https://www.elitetrader.com/et/threads/mafias-hidden-money-maker-on-wallst.362524/