The price has to come down considerably. That price-to-convenience factor isn’t there to improve my life by automating my curtains.

I’m not sure what’s available for your style light switches. I have a similar situation, I have some of my kitchen lights on a switch on the far side of the room. I can program my zwave switches (both decora-style or toggle-style) to do a different command if they are either held or double or triple tapped. So, I have it if I double tap one, it will turn both that switch and the one on the other side of the room on.

Your only option are those higher-cost proprietary systems like Caseta, a wifi system like Treatlife uses requires a neutral.

Your other options is a control is at the fixture where a neutral is present rather than the switch and getting battery remotes, or running a neutral wire.