Thinking out loud here: Obviously because that's how predatory investments work.

Step 1: Notice high potential market that could, but doesn't need to, disrupt established practices and hierarchies by federating stuff. Step 2: Suck all the leaking behavioral and private data out of it. Stup 3: Gain as much control over the supply chains & the market as possible, eliminating federation.

Also: AGI hasn't found its optimal hardware-software combo yet, so "porting" it all to networked mining rigs is worth trying and progressing. And neural nets and blockchains have quite a bit to give & take to & from each other.

*Thinking quietly again ...