THat's a bit revisionist and highly biased.
Intel did some underhanded moves no doubt (and got heavily fined for it in the EU), but let's not pretend for a second that it it was the sole factor, it wasn't even a major factor IMO.
First and foremost, AMD was riding high (with the k7/k8 lineup like the Athlon 64) with a lot of success rested on their laurels and didn't put the money into R&D they needed too.
Then Intel went Tick: Die shrank to 65mn, AMD didn't respond - but their 90mm performance was awesome, so they chilled.
Then intel went Tock - core 2 duo launched but AMD had a few decent 65nm dual cores by then so no worries right?
Wrong. Jan 2007 Intel launches the Q6600 and AMD had nothing to counter it.
It is fast as hell, overclocks like a beast (with a decent motherboard due to locked multiplier), and runs cool too. Oh and they get cheap, fast. from like $500 to $300 in 6 months.
AMD are fucked right now, as not only do they start to lose the desktop enthusiast market because quad core they also begin to lose the server market as Intel based Xeons while more expensive, fairly significantly outperform AMDs whole line up (and server space CPU is an area you do not cheap out).
Then TICK. 45nm, Q9xxx decimate all before them for not much money at that. Yes The phenom comes out and saves AMD a bit, but it doesn't outperform the old Q6600 at stock, and doesn't overclock half as well.
They're cheap though, so there is that. Except for the fact that the 45nm die shrink made the budget intel dual cores utterly fucking monsterous overclockers.
Then TOCK. I7 launches, once again AMD have nothing worth having in the mid to high range - only budget offerings look tasty.
And TICK 32nm - Not a huge deal in desktop, but made the already dominant Xeons even more tasty.
And then the nail in the coffin another TOCK, and suddenly an affordable intel chip with an unlocked multiplier making an instant and easy overclock no issue at all for anyone. Nothing AMD has can even get close to the 2500k, and nothing can to this day.
This isn't even touching the other shit they did (spent too much in ATI, sold their chip foundries and somehow got themselves into a really shitty supply deal with them during this).
So yeah Intel might have damaged them with their OEM program, but that's a fraction of the damage they did to themselves by sitting on their K8 platform for so damn long.