[cthulhua]

This is a logical consequence of non-free software. I'd add that even in the free software case, there's a non-zero cost to supporting legacy software as first-class citizens, to the point where it often just doesn't make sense.

[Aloha]

Its a logical consequence of resource limits, technical debt is expensive, and must be resolved eventually. There is a reason that support for GTK 1.x applications vanished over time, as well as ones that needed old compilers, tied to old library version, and old versions of glibc.