Intel IDM dominance came to be not because Intel had some right or special talent but all pure luck being selected for x86 PC by IBM and after that because of the Wintel monopoly.
There were many companies with superior technology but didn’t have the guaranteed volume and captive monopoly. This allowed Intel in the late 80s thru the 90s to invest huge sums of money in RD and fabs to dominate the logic business. Other like IBM, DEC, HP, Motorola, National, AMD, and others weren’t inferior by much but couldn’t compete on scale and captive market so they all fell behind on this relentless cadence and folded shop.
Than arrogance and business pivot missed resulted in mobile ARMy of billions of processors made by Apple, MediaTek, Qualcomm to enable the Foundry’s to do the same relentless cadence of process development. Intel thru x86 myopia and PTD arrogance process arrogance at 10nm got lost and now they will never recover as they now have neither scale nor technology nor a captive high margin market to milk. Even government subsidies can’t make them competitive against the scale of innovation and economies business that TSMC has with its partners like AMD and Nvidia in HPC and Apple, Qualcomm, MediaTek and others in the mobile. Also many like AWS and Google are doing custom chips as they see how Apple with tight top to bottom integration is the competitive advantage and farm their custom chips to TSMC and Samsung.
Intel has no compelling business argument to invest the tens of billions in CapEx nor similar amount in RD against a far more efficient foundry fabless competitive ecosystem. The competitive angle for this decade is high volume system integration and farming out the manufacturing. Nvidia and AMD can compete far more effectively than Intel can in HPC by drafting on Foundry scale than Intel can ever hope to compete as an IDM, game over not a matter of if but only when.