Every game released whose developers have chosen to complicate its design with a client-server architecture. It's not like this is going to hurt the little three-man teams making games on shoe-string budgets. Yeah, it's going to make big budget games a little more expensive, just like how cars with seatbelts are a little more expensive to build, and like how it's a little more expensive to do proper waste management instead of dumping sludge into a river.
What? This a mandate in law that requires a company to do work in order to comply. Studios will spin out LLCs for a game so that if it fails it doesn't end up as a liability. Unintended consequence: more dead games.
It's impossible for the law to cause more games to die, because already the default fate of online games is for them to die. If, with the law, a studio chooses to use an LLC to create the game to conditionally release sources once it shuts down, that was a game that without the law would have died anyway because the studio wouldn't have chosen of its own volition to release sources.
If a studio on it's last legs is required to service a failing product instead of working on a new one the studio will simply close and not comply. That's what tends to happen with forced regulations like this.
And it's what would have happened anyway without the law. How is this difficult to understand? It's not like it's only a few games that shut down without recourse for the players. Ross Scott already did the research on this. Something like 95% of all online games that shut down do so without providing any way for the players to continue playing in some way or without issuing refunds.