They were too slow in moving chip design and manufacturing into new and different markets, even though the working uses for chips was exploding in all directions. They rested on their laurels for two long. Too bad. They were a great company, once. Although:
I had a friend working for Intel some years back. During that period I got to reading a blog site for current and former Intel eployees. The raft of former employees complaining about how they were required to train H1B employees for their same jobs, after which they were let go, was in the hundreds. From what I read it was happening all the time.
My friend was sort of immune to that sort of thing, in his finance management position. It happened mostly in the real techie positions.
I loved working for Intel, but as with any large entity, they were not nimble enough, or perhaps they lacked vision to know where to position themselves properly for success into the future. So sad to see. As others have said: anybody but Broadcom!