The point is that even in places where about half the employees know how to collaborate with these tools, it is not done because you need the other employees to function.
Now, many people tried Gimp (which is far from Photoshop) and they wrongly think that Inkscape is another Gimp.
I do like gimp as a bit of a Swiss army knife program, it can do a lot of utility jobs like resizing, outlining, etc which can be hard in some of the more intuitive modern apps, but most of my work now is done on an app like Procreate and then I'll move to gimp for the final edits.
There are other photo editing tools with better UI, but poorer features, sadly. It would take a ton of work to catch up in terms of features.
You might find that fact to be on the ageing side :) Unified Transform tool has been available for many years now. It's all three (and more) tools in one.
The majority are not good employees.
Good employees can collaborate well with LaTeX as well. Yet over 99% of workplaces will not use LaTeX.