In the server market sure, there's a demand for low-power high performance SoC's... Outside of Apple, that's the only other market where those types of ARM designs have gained any traction... but I don't see it making any kind of dent in the WIntel market, when you already have extremely powerful discrete GPU's and CPU's... where there's already a sustainable volume of sales on a entrenched platform that EVERYONE seems afraid to abandon (and very few people seem to care about power usage).
Yes, of course there's a premium market outside of Apple... But there's a reason Apple has been the only company to get to this point so far... They have the volume of "premium" sales that's unmatched by any other company. Without that scale the cost per unit goes through the roof. Apple's R&D is basically 2 new CPU cores a year (p-core and e-core). Those are eventually used across the board, in hundreds of millions of high margin devices, from the watch up to the MacBook Pros, and soon enough in the Mac Pro. Same goes for their GPU cores, NPU cores, ISP cores, etc... Not to mention the absolute brilliant design of the M1 Max, where the same SoC can be halved, doubled and quadrupled (supposedly), saving a massive amount in fabrication costs by baking in redundancy so that defects can be closed off and rerouted to another processing unit. Here, Apple has only designed 2 SoC's for the Mac... The M1 and M1X (Max)... That will scale from entry level all the way to an extremely high-end Pro.