Circular financing is an issue if the wealth accumulation stays in the chip -> model provider ecosystem. However it seems like the labs are making quite a lot of revenue from the chips (customers).

Demand for compute is far outstripping what was projected in the initial rounds in which we pearl clutched over 'circular financing' - which is hardly distinguishable even from the classical bill of exchange, the core phenomenon of the money market in Bagehot's day, in which I provide you inputs and you give me a share. I keep reading people saying what amounts to: the primitive bill of exchange was circular!!; if the seller of inputs has reason to lend, so does everyone else etc etc. In fact if the projections about final sales are correct, it is plain all these deals will be fine.