Considering the swaps I have seen done on some cars (5.0l in a 2 door Focus hatchback or more recent a Coyote V8 in a Fusion redone to RWD) I would agree with you. There is a lot to it but a better place would be a car forum with gearheads over techies.It doesn't matter what the car is OUT OF, it matters what the transmission model is, whether it is a standard or automatic transmission (Yes, there are five speed automatic transmissions these days, and of course there are a few oddball auto shift models as well) and if it's a manual/standard transmission then it matters what the bell housing pattern is if it is a model with interchangeable bell housings.
Knowing the exact model and bell housing pattern for the transmission AND for what is required for the vehicle and engine it is going into are what is needed. Knowing just what the car model and year are, are worthless when it comes to transmissions and interchangeability.
The "no" answers I see here are (No offense intended) unsupported with any proof as to why they say no, and that's not a valid way to answer this question because unlike just about everything else, transmissions can potentially have MANY different engines and MANY different years, with an extended number of years between the first and last years they have fitment for, that they potentially offer fitment with.