Nobody is really competing because nobody can build a complete product. So there's less pressure to fix the little irritations. Users are mostly satisfied, and problems get worse slowly enough that for the average user they don't notice right away how bad it's getting. So they stay because it's too hard or completely impossible to leave.
But, hey, they managed to add a Tron cross-over tie-in feature, and maybe some new fart noises!
Undoubtedly when they fix that radio bug, something else will fail. Like the SRS (supplemental restraint system, aka airbag) error message that was introduced at some point in the past six months, then silently got fixed with a more recent firmware update.
And, you know, FSD 14.2. :)