Why haven't copyright holders implemented the adware scheme yet?

Question

Copyright

Recently, when looking through pirated copies of films , I often come across an already pretty boring advertisement for "JoyCasino". It is clear that advertising is inserted by the "release group" and / or the authors of the voice acting - everyone wants to eat, few people will voice such volumes with decently increased requirements for them "zatak".
So, the question is: why shouldn't the copyright holders themselves embed such advertising and distribute films for free? I think almost everyone will be happy.
Maybe there are already precedents? Why is this practice not common? Who is in the subject?

Answer 1

Everything is simple. Paid content brings more.
But ivi seems to be doing this already for non-new films