> open source server code if you are going to cease support
When I was a senior exec at a big public tech company, there was a product we decided to discontinue and we thought would be nice to just open source. Somehow I ended up in charge of managing that process and was shocked at how complex, time-consuming and expensive it was in a multi-billion dollar, publicly-traded corp vs some code my friends and I wrote.
Legal had to verify that there was no licensed library code used and that we had clear, valid copyright to everything there. The project had been written over several years, merged with a project we'd acquired with a startup, some key people weren't around any more, the source control had transitioned across multiple platforms, etc. And even once we nailed all that down sufficiently, we didn't get an "all clear" from legal, we just got a formal legal opinion that any liability was probably under $1M. And then we had to convince an SVP to endorse that assumption of $1M potential liability and make a business case for approval to the CEO.
For a public company, the default assumption for any online game would be "the server side code WILL be open sourced" (under threat of prosecution). That means legal would mandate "No commercially licensed libraries can be used, any open source libraries will have to be vetted to ensure the license is compatible and everything else will need to pass IP and compliance audit." That will certainly have an impact on development time frames and economics.