Without manufacturing, tell me what long term adv will Intel have ? What reason would it have to live as a company. You already have AMD as fabless and they have figured out the right way to function in fabless environment for last 20 years. And Intel doesnt have any advantage for x86 arch over AMD.
So then Intel is just a commodity business.
IF there is a desire to lead again and not be a 4-5th fabless silicon supplier in the industry, company HAS to try to do IDM 2.0 and also there is no option to fail now in this. There is too much invested in this. Not only from capital standpoint, but from time investment standpoint too.
Everything relies now on Intel's internal IP development teams discipline to be able to execute fast and produce quality results, AND, IDM 2.0 execution.
Intel must execute flawlessly over next 1 year.