I know Meta pays a lot, but did you ever consider an alternate path where you didn't take that job and instead grew the service out further? $23k/month is good money.
I thought about it, but I hadn't originally built it to make money. It was a weekend hack project that I never expected to do that well, and suddenly the prospect of centering my life around a product I didn't really feel passionate about felt like a nightmare. I had a lot of anxiety about whether my external dependencies I'd built on top of would continue to work, and reached the point where a large payoff was worth it to de-risk myself from $23k/mo becoming $0/mo with no exit.