The way the recent deals have been structured is that the capacity and thus revenue is pre-booked, which upgrades the credit quality in the eyes of the lenders. Blue Owl is private equity, so they are likely loading the special purpose vehicle itself with the debt (in a way that it off Meta's balance sheet, which is the primary objective), and then possibly funding the capital outlay through secondary markets (if not now, then perhaps later they can bundle it up and sell it - it's Meta adjacent so they will have no problem selling on that debt).

If Blue Owl is providing capital for an equity slice, they get huge leverage on their cut baked into the deal. Pension funds that may end up buying debt in the deal eventually don't want to actually fund the equity of the project and take the risk booting it all up while sitting at the front of the capital stack with corresponding risk of getting wiped out (even if it's a Meta partnership), they simply want securitized fixed income, and make it as vanilla as possible.

So the question is more "will Private Credit (or pension funds/institutions) take debt backed by datacenter collateral with long term service agreements with Meta" and the answer is yes. There is much lower quality stuff than that in the PC space.