There are going to be small shops for which the familiarity of Xeon will be enough to keep them in the same pattern. If 10% of your costs are just a few weeks or months of engineer time, and you only have an engineer or two to spare, it's a big risk and expense to figure out the different costs and to do that evaluation run. There are a lot of shops like that.

There are not as many huge enterprises, but they are a huge amount of the market in terms of volume, and at those scales a 1% savings is worth years of engineering expenses, and you can bet that they will be doing the studies and choosing the most cost-effective option regardless of previous decisions.