Sometimes there are vendor lock-ins in projects and in such cases it does matter. Adobe has a lot of buy-in in organizations especially in the creatives. By quite a margin.
Also in job hunting phases, considering that now almost all early processes are digital(sending a digital version of the CV to an email id or uploading to a DB or server versus shooting off a postal letter) I'm told that due to the sheer volume of CVs received, it is not humanly possible to read through all of them to find a fit for an opening. Software tools are used to sift through the CVs against some keywords. Invariably, in most digital media creation related oenings, Adobe and it's various tools will feature prominently as the early keywords to filter the CVs.
On a personal note, I like open source software. Besides the actual usefulness of these tools, the very concept of collabarative building of alternative tools is very radical and you have to admit that it bought a lot more people into using software in various domains. I also use quite a lot of other non Adobe tools as well, especially in the UX deliverables area(well, perhaps it could be because there was a void as Adobe almost missed the bus till the standalone XD came out) and more recently in writing code. But Adobe software generally has that edge both from a quality/finish perspective as well as the workflow focus. You just cannot not be productive.
Now, about the pricing...well, good things come at a price I guess.