The issue is that the VG industry is pretty far behind in this respect, not that there's a lack of demand. Just look at how the NES/SNES classic consoles sold out in the blink of an eye and there were mass shortages.
The demand is there, it's just a question of having a convenient enough package
I think Nintendo in particular revels in the scarcity. They value their IP above all else, and they know that's what their customers value, and they want to squeeze it for every last drop of fan loyalty they can. See the artificially limited-time (digital!) release of "Mario 3D All-Stars": https://www.nintendo.com/products/detail/super-mario-3d-all-...
The demand is there, it's just a question of having a convenient enough package