So this strikes a cord, and I'll say I've done this, but for a different reason. We started an accelerator, and year 1 was horrible. Pivoted in year 2, at the end of year 2 we had changed our focus completely which I no longer desired to work in. I left as CTO while we were fundraising (after being bootstrapped the rest of the way) so that I could leave in clear conscious. I didn't want to spend 5-7 years, so I left before the money came in.