Yes, this is exactly the problem.

Programming productivity has been crippled for decades by the inability to reuse code due to copyright restrictions.

Because of this, the same problems have been solved again and again for countless times, because the companies employing the programmers wanted to have their own "IP" covering the solution. As a programmer, you cannot reuse your own past programs, if they have been written when employed elsewhere, so that the past employer owns them now.

Now using AI one can circumvent all copyright laws, gaining in productivity about as much as what you could have done in the past, had you been permitted to copy and paste anything into your programs.

This would be perfectly fine if the programmers who do not use an AI agent were allowed to do the same thing, i.e. to search the training programs used by the AI and just copy and paste anything from there.