I will caveat that though, I am bullish on Google and AI in general given the incredible talent and vast amount of data Google has access to. I think eventually they will make a technological breakthrough that puts them back in the leader position - they had it with transformers and just didn't know how to turn it into a product.
As for a breakthrough to leadership, Demis' approach of using successively more complex video game environments to develop AGI is absolutely the right path, so I wouldn't be surprised if DeepMind generates a prototype "AGI" first, but I would be VERY surprised if goog successfully capitalized on that.
Huh!
That's probably a good reason to avoid organisations of these sizes unless you have a good reason not to, but ... that applies to any organisation of comparable size.
However, they way they approach it varies considerably, and I'd expect Google engineers to address it in a way that minimizes problems resulting from, say, changes in product A causing problems in product B. I'd bet some work on that has already been done because these folks aren't stupid but apparently that's not enough.