The management culture there is insanely siloed and toxic, full of scar tissue from previous periods of political turmoil and a few relentless sociopaths who absolutely will not stop climbing just because it's obviously damaging to the company.
The engineering culture is full of secrets, moats, and the general sense that while making progress might be your job, stopping it is everyone's job. And there are always more of them than there are of you.
Perhaps most fatally, responsibility for decisionmaking is ultimately delegated to the process of decisionmaking rather than the people involved. The resulting proliferation of checkboxes and box checkers have elevated dysfunctions like "the perfect being the enemy of the good" and "none of us is as dumb as all of us" into de facto mottos for large parts of the company.
All of this happens against the backdrop of eroding mind and marketshare, a total lack of real product clarity, and a pervasive culture of bullshit that puffs politically convenient non-accomplishments into events worth of companywide applause while spinning, downplaying, or even hiding bad news of calamitous import.
Intel has vast reserves of talent but without deep (IMO, impossible) cultural changes it will inevitably fail under its own weight.