If you are a startup, and you want to buy AI infrastructure, you would typically sell equity to a VC and use that money to buy infrastructure.
If the AI infrastructure vendor would offer to buy that equity, rather than a VC, that’s preferable because you may get ongoing special treatment from the vendor once they have a stake. So it’ a great deal for the startup.
For the infra vendor- you can likely get a good deal on the investment, you get some exposure to higher upside, and it may be useful to manage your cash flow.
Seems like strategic high value moves to me. It’s no wonder the market likes it