To be fair, that is where some 80-85% of their Mac revenue comes from (with likely only a few percent from the workstation market). So Apple's focus will be on light laptops that users can comfortably carry all-day and also use all-day with the included battery pack. And in return, those features are part of the reason the significant majority of Mac users buy those laptops.
The Intel Mac Pro benefitted from Intel's focus on the server market (as that is where 80-85% of their revenue and profits were coming from), which allowed Intel to push that down to the workstation (Xeon W) and enthusiast (Core Extreme) markets.
But Apple wanted a workstation that ran cool and quiet because many of their professional and enterprise customers wanted a quiet workstation because they used them beside their desks so Apple cherry-picked components or had customized versions made for them to meet those goals (for example, Apple used "B" series Xeon W CPUs that ran at lower TDPs than the "standard" Intel part, trading a bit of speed to run significantly cooler and therefore not needed loud, high-speed cooling fans).
And if we believe Mark Gurman and Majin Bu and others (and I am inclined to do so), Apple did try and make "workstation class" versions of the M1 and M2 SoC and just hit too many compromises that would not have delivered sufficient value for the price Apple would have charged and therefore would have found little to no market. But those were designed on 5nm processes and 3nm processes are said to bring a lot of advances in power consumption and other areas, so Apple and TSMC might be able to make it work on 3nm.