If you're happy because you can test the public beta versions of iOS and macOS, well, you have to attribute it to the failure of Apple Maps during 2012, the enormous problems registered by this platform forced Apple to test more carefully the services it launches.
launching Apple Maps it was met with a lot of criticism from users who were extremely unhappy about the fact that a mature Google Maps was replaced by a service that was largely useless and without very many accurate maps and features that users they used daily.
The revelations regarding the real reason behind the launch of the iOS public beta testing program were made by Eddy Cue, the vice president of the service division at Apple, he stated that everyone in Cupertino thought that the service was extremely good for them, the global situation being different.
The biggest problem was that Apple engineers didn't have the opportunity to take usage information from a large number of people on the planet, so they only relied on what they tested in their own location, but that data they did not prove to be applied at the global level, the resulting scandal being huge.
"To all of us living in Cupertino, the maps for here were pretty darn good. Right? So [the problem] wasn't obvious to us. We were never able to take it out to a large number of users to get that feedback. Now we do. The reason you as a customer are going to be able to test iOS, is because of Maps."
Having said that, here's how out of the whole problem with Apple Maps something good also came out, but I think that the launch of the public program for testing iOS beta versions is also based on the enormous problems that iOS 8 had with every public version released by the Apple company for customers.
