I assume they get "monetization" from Youtube and they don't need to worry about hosting or discovery. Probably better than doing nothing with these films.
The only 2 companies that made money during the “streaming wars” were Netflix, which had the infrastructure in place already and didn’t need to build anything from scratch, and Sony, which decided not to build any streaming service and just license all its content out. Seems WBD is following the lead of a winner.