>I'm enjoying the lifestyle of "solve client's problem, client pays me money, innovate, iterate". It probably won't last forever, but it's simple and it feels authentic.

Don't underestimate that! It's better to have a good source of income, freedom of action, and be happy doing something enjoyable and meaningful in life, rather than chase unicorns by dealing with investors you don't like forcing you to do things you don't like. Up from a certain income level, extra money doesn't bring more happiness. And that income level isn't that high.