> ie trying to not do new things because it takes more work to change
That's not what the word conservative means, not by the dictionary or even politically.
Conservative is the averse to change or to hold traditional values without logic. It's more like a type of fear. Even if the change was easy or have 0 cost, a conservative entity won't do it.
Outcome is the same, but being "conservative" isn't the real reason.
Adding a vendor requires compliance work, process, finance etc that it's just effort.
99% of medium-large companies use Microsoft in some form so Azure can skip all of that to some extent.