People trying to market things create a lot of new terms. They don't want to seem like they're selling the same old thing, but something new and innovative.
Occasionally, the new term is warranted, of course, but that's far less common than simply trying to appear different.
I know it sounds really over the line example but I am sure that there are examples like this where the same thing gets some new terms and it gets a lot of funding that is, there is an incentive to put on new stickers.
The goal is not to appear different, the goal is probably profit, which they can get if they can get better funding I suppose, and they get better funding by slapping stickers.
It pretty much is the same, the only change is the level of abstraction. Apparently the easiest thing for everyone is just giving the user access to the whole damn OS via a container, rather than have them deal with vendor specific mainframe minutea.
