I'm interested in a motorized roller blind for a difficult to access window, but the units I've seen so far use proprietary RF signals with special remotes or a proprietary hub and app combination.  I worry that these expensive home systems will cease to work entirely if these components fail and prove impossible to repair or replace in just a few years time.  Are there good choices out there for motorized window treatments that use standards-based protocols like z-wave, bluetooth, wifi+REST or even just IR that a resourceful maker could work with once the remote/app you buy them with stops working?