I agree with you about Elon Musk's claims, but that's not what we're discussing here.

If it takes until 2035 or even 2045 for space data centers to have an economic advantage, it still seems like a good investment for someone in Google's position.

And FWIW, there are quite a few people claiming that they'd "go against the laws of physics", etc. For example: https://news.ycombinator.com/item?id=49838152