Reading about Google keeping their long tradition of discontinuing products/services, often after just a few years[1]. On the other hand, the minimal "bus factor"[2] of my open source offerings is one of the stated reasons for people to not use them, even though the vast majority of the 200+ https://thi.ng/ libraries & tools has been actively maintained for much longer than many Google projects (99% by this single person)... Even many of my older projects which are defunkt by now have had an active period which outlasted many Google services, and — crucially — they're are stable, still available and can still be used now (e.g. my Java library collection developed between 2005-2013 still has regular users)...
Maybe internal politics, re-orgs and layoffs in BigTech are an equal/bigger risk factor for users (aside from other differences in design philosophy and resulting coupling and tech debt, e.g. massive all-in frameworks vs. lightweight composable pick-n-mix toolkits)?
[1] https://killedbygoogle.com/
[2] https://en.wikipedia.org/wiki/Bus_factor