The point is that there have always been initiatives of this kind announced from time to time (Riscose, RON, etc.). It would be great if all of these projects were successful and properly finished off, but I can't help thinking they probably won't be.
As flibble correctly pointed out, you can't really ask programmers working for free in their spare time to change their priorities. But it does seem odd that we have all of these uncoordinated attempts to get different emulators working when there's no RISC OS coder working on an important app like NetSurf.
I don't mean to be negative - it's great there's stuff going on, and I really hope these projects are successful. Let's hope some coherence emerges in due course