The industry hasn't grown out of OOP. Go look at any major production codebase businesses rely on and it's fully of objects and classes, including new codebases made very recently.

Package managers aren't going anywhere. Even languages that historically bet on large standard libraries have been giving up on that over time (e.g. Java's stdlib comes with XML support but not JSON).

Unfortunately, LLMs are also not cheap enough to just create whole new PL ecosystems from scratch. So we have to focus on the lowest hanging fruits here. That means making sandboxing and containers far more available and easy for developers. Nobody should run "npm install" outside a sandbox.