Ironically, that's Rust biggest problem: not using perfect ownership management works for most software most of the time and that's good enough for most people and companies.
You probably can't sell ownership management as a feature. The only thing that Rust can sell and that makes sense is "it won't crash" + "it's fast", but then there's a lot of other languages that have the first property and the second is not very appreciated, as seen in the rise of so-called Electron apps and web apps in general.
I think in time more and more people and teams will discover that doing stuff with Rust is just cheaper and more productive. You learn ownership once, you get great results ever after.
It seems likely that you and I are using different definitions, and yours Rust-specific (and therefore not meaningfully generalizable to other languages, especially those with GC).
I mostly write Java for a living, have done for a decade, and still occasionally trip myself up by mutating an object I'd forgotten I've shared.
Anyway... Languages with GC still do have ownership. It is just defaulting to be the most problematic case of "shared ownership" everywhere. Shared ownership is only worry-free if you don't ever modify data. Which is possible, but actually harder and more constraining to implement in a practical software (especially if you care about any performance). So then you either have to synchronize everything with mutexes, and figure out a way to not deadlock yourself on every step (also hard), or you have to implicitly track ownership and decide who can and when mutate the data, which is exactly what Rust would make you do, but this time you get no compiler help. The only reason people don't notice that is because they do it incorrectly and it works most of the time, so they are unaware.
There is no escape from it - one has to figure out ownership with a GC or without it, because GC has nothing to do with ownership. It only reclaims memory after all references are gone. That's it. That is actually very, very little improvement.