That doesn’t sound fair at all. I think for many games, considerations such as this potential law will demand would have to be included in the initial design and development. There are also the potential implications for licensing of middleware etc.

Again, you cannot be expected to comply with a law that doesn’t exist yet.

There may be a case for “live-service” games that it could apply as they could be considered to be under constant development. Most of those are either subscription or free to play though which would exclude them entirely as neither is a purchase of a perpetual license.