Epson fights back against 3rd party cartridges

Epson has won another round against the manufacturers and distributors of print cartridges compatible with its printers.
This time, four German retailers were ordered to no longer distribute them.
Epson is of course pleased with this victory, and stated that they have no problem with competitors who want to make compatible cartridges, as long as they purchase a license so as to not violate their intellectual rights.
Although, one wonders whether a manufacturer would be able to remain competitive with the original if they agreed to pay for the license.
All of the problems in this matter originate from the skewed printer market. The products are sold in the best case at cost, and usually at a loss. The loss is then made up through the sale of consumable items at inflated prices.
To prevent the emergence of compatible cartridges, the manufactures use more and more complex system protection to lock out competitors, which in the end raises the cost for the consumer.
When will there be a law forcing the interoperability of cartridges?