Both Photoshop and Word are industry standards. For Photoshop, one can't just swap it out, and if you think one can then that only shows you are not even a novice user, much less a professional who needs it for work.
As for Word, I use Word (unwillingly) for work, and I am able to get what I need from just the web version. My "complicated" documents are typeset in LaTeX, not Word, and LaTeX is the standard in my industry.
Ah, I thought we were talking about normal users, not the sliver of professionals that use photoshop for their job.
I bet djao thought the same thing.
Which makes the rest of your comment a misaimed criticism.