The only case where this may have made sense - but more for an individual rather than a team - is Google's aqui-rehire of Noam Shazeer for $1B. He was the original creator of the transformer architecture, had made a number of architectural improvements while at Character.ai, and thus had a track record of being able to wring performance out of it, which at Google-scale may be worth that kind of money.
Noam was already one of Google's top AI researchers and a personal friend of Jeff Dean (head of Google AI, at least in title). He worked on some of the early (~2002) search systems at Google and patented some of their most powerful technoloigies at the time- which were critical in making Google Search a product that was popular, and highly profitable.
The only case where this may have made sense - but more for an individual rather than a team - is Google's aqui-rehire of Noam Shazeer for $1B. He was the original creator of the transformer architecture, had made a number of architectural improvements while at Character.ai, and thus had a track record of being able to wring performance out of it, which at Google-scale may be worth that kind of money.