I'm not sure this is actually true. Intel and AMD are not thrilled that Amazon and Google have so much market power as their buyers. They are willing to give

I'm not sure this is actually true. Intel and AMD are not thrilled that Amazon and Google have so much market power as their buyers. They are willing to give you a lot of other value-added products and a TON of engineering help along with their CPUs if you are buying a cluster. They will also give you a decent price (not as good as they have to give to hyperscalers, but good), and try to establish a long-term relationship with you. Also, cloud environments are rarely cost reductions. They are very frequently more expensive than on-prem deployments, but they are used because they are easy to spin up and down and they allow you to engineer things faster.