Manufacturers just hate it when other organisations produce supplies that fit their devices, but unless that have a patent on some novel aspect of the process there is little they can do about it. So it's the same with coffee machines, vacuum bags, printer cartridges.
Original manufacturers make a lot of followup income from the on going supplies, often more than on the original sale.
Provided the cartridge seems the same physically, then there is no harm in experimenting; of course the quality of the coffee is a variable too.