In case of Stellaris it is more like you would buy Stellaris, Steallaris 2, Stellaris 3, etc. Each big DLC is like another game in the series. And the smaller ones (like species pack) are completely optional. For me this is an example of DLC done right.

It is not like e.g. City Skylines, that most DLCs just give some minor additions and for a meaningful change in the game you would have to buy lots of them.

When the corporation controls the hardware and the OS it can easily break any encryption running there. Just include key loggers, break RNG entropy, extract keys from memory, or just capture any data before they are encrypted. Or just let the governments into the OS so they can do all that.