We could see the first company vertically integrated from etching to chip to data center

That's Intel. Probably IBM too, though they've been doing mass manufacturing with TSMC (and GloFo before) for years instead of their fabs. I wouldn't be surprised if HP did similar things back in the 80s.

What do you mean by etching? Google does also it's own chip design with TPUs, data centers, and models but afaik only TSMC Intel and Samsung do the actual semiconductor fabrication