I've been inside of 2 such companies. Over time, they both changed (for the worst) and I left (along with many others). My tenure in both was 6.5 years and 8.5

I've been inside of 2 such companies. Over time, they both changed (for the worst) and I left (along with many others). My tenure in both was 6.5 years and 8.5 years, respectively. If I had had any degree of confidence that management could or would have fixed the culture problems the organizations were experiencing, I'd have stuck it out. In fact, in the case of the second employer, that actually did happen, and I stayed specifically because I thought that management could fix the issues and that I could help them. Both of those things were true, and because I was helping us move in the "right" direction, I experienced a ton of professional growth, but then the culture shifted again (we were acquired) and the place simply became inhospitable. I was part of the initial exodus of engineers who left. I've heard from colleagues who have remained that ~50% of engineering has turned over in the last year. I suspect that I will have some short tenures (1-2 years max) on my resume now, as I try to navigate my way through to another long tenure employer.