Had talk with two people working inside big US companies.

Only around 20% of al developers are working on that can be considered really new features or improvements.

Other 80% are making and patching (it is one thing!) issues in the endless loop. To keep it going they inflate code size and slow things down.
All according to Parkinson law. They themselves also multiple and invite their friends to join.

Most fun thing that in some corporations, like Google, it is well hidden. As you are not getting any reward or promotion for fixing issues or optimizing stuff, but still required, it will be pushed to nerds and new guys. All others are making "new breakthrough" projects that are mostly going directly to dump, as they are horrible. Around 90% of Google developers have no idea about the real problems their software must solve. They just ask managers to next tasks and don't get their head stuffed with such shit.

This bubble will pop extremely loud and extremely violent.

P.S. Small inside. If Adobe will be forcefully returned to their individual releases, without subscription, they'll need to fire around half of all developers without any visible result (as they are part of same infinite cycle).