Consumers want faster processing the instructions are just the method to get there. And they aren’t the best since the area dedicated to the instruction could be used for something else.
It is insane especially if you think emulation is performant enough to allow for a switch.
Obviously there's very little of that, but what should matter is the developer uptake and thus better end-user experience that can be delivered? (I'd also hope for even better autovectorization in compilers.)
It's in my opinion kind-of insane that we're still building so much software for ancient baselines and leaving quite a bit of performance on the table across the entire system. (How much has Apple won in terms of performance by forcing everyone to build for new ARM targets using new toolchains?)