One positive way to look at it is that there are still plenty of stylers like Pixelexit, xenique, audentio (i think) Razorthemes sultan themes and many more independent stylers so all is not lost. *motivates thread*
Yep, the forum skin market is a shadow of what it once was (and contrary to popular belief, the XF market is miniscule compared to vB and IPB and will probably be that way for some time still). Custom work may be okay for some, but even that is a "nickle and dime you to death" endeavor in the forum styling world.
Hate to see Miner go, but stuff happens and design houses come and go all the time. Best of luck to him!