That's true. Taking the example of the husband of one of my piano students, a medical doctor who makes a lot of music for himself - he's not interested in hardware synths at all, all he has is a cheap Yamaha P-115, connected to an iPad and maybe a laptop.
Even for me, I'm more a fan of hardware ROMplers, the improvements in the availability of good IOS libraries such as iSymphonic make it less and less important to have a big collection of samples in my hardware instruments.