Eh I was mostly sick of having to have a device to open the gate, a device to turn on my car, and a device to open my garage. Whats wrong with 300MHz? I'd rather not have to carry around all this crap vs a depth sensor that I might use once as a gimmick to 3d map my bathtub.
Radios and antennas. More weight and power for limited usecases. In Apple and Google’s mind - replace your garage door opener with a connected one. You are talking about an SDR to allow multiple frequency ranges.
I personally would love to have an SDR integrated with my phone (and for operating in lower frequency ranges, just give me an antenna port next to the audio jack (oh, wait...)). But then again, a TX-enabled SDR in a popular consumer device? FCC would not be happy...
If that car alarm system stupid enough to have static unlock code that can be replayed, it deserved to be hacked.