How does this work retroactively on released products? Say five years ago, I paid a company to build a house, who hired a contractor to build it and it was completed in a year. Nowadays, I open the door daily. Now the contractor goes to the company, saying that from January 1st, every time I open the door, the company has to pay a small fee to the contractor, because they built the house with the door five years ago.…
It's like how I can't buy a Rolling Stones CD and then play it on the radio for millions of people without paying them. I never bought the music, just the right to listen to it privately.