Yeah - but having worked in many companies over the decades, ALL software is this way and most commercial software is even worse.
The difference is, you can’t fork and fix it yourself when it’s closed source from someone else. and a surprising amount of code running in every company it’s ‘someone else’s’ code even when it’s internal and part of the same company.
Then you're very lucky! I'd also question if you were thinking/discussing just the primary product, or also including various edge parts (like the library someone wrote years ago to deal with cleaning up old log data or whatever).
Even at the FAANGs I've worked at, it was pretty common for bugs to never get triaged or even looked at for long periods of time that impacted some users, or serious bugs that weren't in the critical path for common use cases to stay unfixed for years. Libraries that weren't actively 'owned' by anyone sometimes go even worse.
The difference is, you can’t fork and fix it yourself when it’s closed source from someone else. and a surprising amount of code running in every company it’s ‘someone else’s’ code even when it’s internal and part of the same company.