A study from irdeto? That seems like something totally reputable and not at all biased or with fudged information at all /s Yeah obviously not, this company is well known for lots of sleazy practices, as are a majority of DRM companies, it’s how they sell their products. The upshot is it means it’s very hard if not impossible to trust them when they create ““studies””.
What makes it open source is the fact that the parts which matter most are open source. The part that installs on the system is open source, and because of that it can be more easily tweaked and modified to accept other servers. In actuality it can be modified to do so right now, it’s just that there is little reason to do so because the amount of people enthusiastic about snap isn’t very large, as it has many other problems besides just the centralized server infra.