I hate the euphemism of "joining". It's not a happy union of two groups of like-minded people deciding to pool their resources to better do what they do.
It's one set of suits paying another set of suits a boatload of money to fuck off, then firing half the people who created the value that made it worth to talk about in the first place.
Acquisitions are not a happy sunshine and rainbows thing, it's one corporation devouring another to gorge itself ever bigger.