No chance, ever. Worst idea from Ashraf.
If Intel goes fabless, who will its (the Intel fab) customers be? Where will they get the volume and revenues that Intel gets? How will they stay on the leading edge. Spinning the fabs off is the best recipe for disaster.
Don't forget that most of TSMC's volume comes from old process nodes.
Intel doesn't need to spin off. If there is money to be earned in being a foundry, they can invest in that within Intel, although BK didn't talk about that so that's I guess another one of his failed attemps. (Apple would've been the best candidate.)
The whole point about being an IDM is that is has huge advantages. No foundry tax (the money from Intel and the fab would be split, which leads to huge money flow disadvantage), process/architecture integration and optimization, TTM improvement. (Only problem is maybe that Intel doesn't want to go into the 5x% gross margin so they can't afford to go to newer processes until they're mature enough.)
Edit: Seems others agree, wrote this comment before reading the other ones.
Edit: Also don't forget Intel's data center effort with silicon photonics, Omni Path, etc. Intel is at heart a hardware company, so spinning off their in-house manufacturing doesn't make any sense. Unless you have financial problems. But who is still the world's biggest semiconductor company?