Propagation and range though technically one is supposed to have a Ham Tech license to operate at certain power levels in the 70cm band/433Mhz. Of note, I see my wireless outdoor thermometer is 433Mhz and they "aren't" restricted to Ham operators!
I believe they are very low powered and likely exempt or they're sold illegally but I doubt that. I don't think a large company like Taylor is going to flirt with the law.
A LP Beeline GPS on 70cm is just 16mW and performs very well on the Ham band. Was the only game in town years ago and was the reason I got into Ham Radio. A GPS tracking system back then cost as much as the purpose-built Walston and Falcon tracking
RDF devices. If one was going to spend that kind of money I figured I'd be happier with the accuracy of GPS tracking as opposed to the "bearing only" RDF.
Now look where we're at with tracking.
Honestly, If you're going to do wireless launching, do it for yourself. Use an encoded signal so it's less likely to cause a misfire and try not to interfere with another radio service. All of these are achievable especially since we generally fly in wide open areas.
I just wouldn't go into business doing it without careful consideration and resources of investment like already discussed in the other posts.
The Rocket Rev, Brad Wilson at Wilson F/X:
https://www.wilsonfx.com/ Has a worry free turnkey system that can include wireless and costs accordingly. Many clubs post nothing but kudos. Kurt