Toilet, think of this for a minute:
Minecraft is currently one of the largest sandbox games today, raking in millions of dollars from game sales, merch, and Realms, not to mension MINECON
Minecraft is mainly built around the community, with people using servers, mods, plugins, you name it.
If Microsoft was actually going to ruin minecraft, it would have done so already
Because minecraft is so prominantly based around the community, doing something like killing plugins would kill minecrafts playerbase. Not to mension that minecraft code isnt really hard to get ones hands on, and it would be simple for a pleb coder to make a new plugin with a loophole, once its found.