Sure Google can and does shut down products but they tend to give more than two weeks notice during the holidays.

Agreed

A company with a known working profit-making model is best, big or small.

GitHub used to be like that. They started very humbly, rejected most investments, grew slowly, but eventually owned most of the market.

I'm happy to hear that as a self-funded SaaS founder (https://partsbox.io/). This is exactly what I'm trying to tell my customers (some of which would rather see a large VC-funded operation): if you consider the probable exit paths for a VC-funded startup, very few are good for customers.