Agreed that Google isn’t going to announce one day that they’re going to demolish all the datacenters in 30 days, but that doesn’t mean that GCP has any guaranteed future either. If Google leadership decides to walk away from cloud hosting, it’ll come in the form of reallocated engineers, reduced headcount, smaller conferences, and a general transition to “maintenance mode”. (At which point it’s a corporate backwater and everyone who can transfer out will.)
But for companies picking a cloud platform tomorrow, that’s a fate as good as death! AWS and Azure won’t slow down development and new features, so a couple years after GCP stops being a priority, it’ll start also being a bad deal, and a couple years after that it’ll be a straight-up strategic liability. THAT is why anything other than full-throated support from Google leadership for indefinite GCP investment will lose them business.