Although I agree, one key difference from this case and your analogy between Vim and Notepad++ is you don't save a few hundred/thousand dollars switching from V

Although I agree, one key difference from this case and your analogy between Vim and Notepad++ is you don't save a few hundred/thousand dollars switching from Vim to Notepad++. That's an extra factor that, at least for me, made it worth switching and investing some hours into adjusting for hotkeys/shortcuts/etc. To be fair to your point though, I don't have a decade of full-time work invested into Photoshop so perhaps my muscle memory was more malleable.