An open standard would be fantastic. I don’t think this is quite as straightforward as something like smart home tech though.
Big data aren’t gonna wanna forego the data element like Apple’s solution is void of. And there are folks who think the anti-stalker stuff diminishes their usefulness and would rather forego those protections in favour of anti-theft.
An open standard would need everyone to agree on every aspect, because it’s the network aspect that would need to be open and shared, rather than the hardware. The find my network being open to third parties for enrolment I think is the best we’re gonna get here.