Why doesn't anyone produce new historic military firearms?

[CINDERS]

I read a few posts on AIA interesting they classed it as not a faithful repro of a No.4 perhaps to copy the action/rifle faithfully would have entailed far more machining which would have bumped up the price I watched the vid on "Franken Rifle" interesting comments about the AIA at least they had a go perhaps they will be collectible given the small No.s produced just do not try and get spare parts for them apparently....