Remain to be seen if they will get good yields. I mean, Intel was having trouble no long ago with their 14A process, especially yield issues probably related to EUV lithography. Another issue is that Intel will have to divide their engineering teams to support Elon quest for high end chips, something that I think will weight down on Intel. Is long learning curve and Elon is skipping almost everything.
HSMC failed because the CEO wanted to start with 14nm and 7nm without zero experience and once the reality kicked in of the difficulty of these advanced nodes the company when down pretty fast, so have to be seen if Terafab is going to be Elon HSMC moment or Elon TSMC.
Or is going to be like Japan Rapidus, they get big money from the government and they have cool tech but I don't see the customers and revenue. The issue here is that the Japan government can support Rapidus for a long time until they get costumers but given Elon track record is probably that he will drop the project once get to expensive.
