> shouldn't imply that all 3rd party libraries also have to be open sourced.

That's a very reasonable way to address the issue of 3rd party licensed IP. I expect something like that will get incorporated into the legislation. In fact, I'm confident it will because well-funded lobbyists will ensure that common sense concern and its very reasonable solution are heard.

Then Electronic Arts and Microsoft will sell their existing server code to newly formed companies (which they happen to own). Then their captive game studios will start releasing new versions where the publicly released "server source code" is five pages of #IfDefs followed by a call to "Start_Totally_3rd_Party_GameServer" in the new library that's not required to be included in the mandated release.

For extra credit, the newly formed 3rd party entity will be incorporated and domiciled in Ireland, Malta or whatever country is currently most tax and currency exchange advantaged. Then the license fees their captive studios have to pay to use the 3rd party library get offshored and tax sheltered - while being large enough amounts to prove this definitely isn't a sham transaction!

To be clear, I don't approve of this myself. In fact, I hate it. But I worked at a high level in a top ten publicly traded tech giant long enough to see how the armies of soul-eating MBAs, lawyers, consultants and lobbyists can subvert anything. Fortunately, only half my soul was eaten and some of it has regrown.