Maintaining fab capacity requires product to run through that fab. Intel no longer has enough volume to maintain that on new advanced nodes (yeah, farming out CPUs to TSMC is super helpful on that front), and nobody wants to be a foundry customer of Intel given how badly they have failed to support those efforts over the past 20 years. I mean how badly are the fabs being run if they burned bridges with 3 different FPGA companies? The fabs need to be spun out of Intel and given a competent management team that knows how to run a foundry, build a new customer base and try to turn a profit in 10 years or so.

Honestly, throwing more money towards Intel without breaking it up is just going to increase the scale of the losses at this point. The internal culture is so broken that the likelihood of turning things around is negligible.