Budgetary constraints on resources is certainly an acceptable and understandable reason. However for corporations as large and rich as Apple, that argument falls on its face. Of course they can do whatever they want, and we are free to complain about it and not purchase their products either.
It’s not even a budgetary issue. Apple put hardware on its chip to make it easy to do these things. Why should they bother going to the engineering effort to make it work on hardware without those new features? It’s a waste of time - those engineers have better things to do.