Google needs long tenure more than other companies due to its large reliance on in-house software. This is yet another move to shoot themselves in the foot. Luckily, network effects will keep them in business for another few decades.
Worked for many tier 1 investment banks in the techiest corners of each org and some cases felt like startups with all the shiny new toys everyone else was using vs the dark ages of customized software straight from the nineties or some other entirely-in-house-built abomination in other places.