I'm seeing a mixture of what you're saying, Steve. At my job we have standardized upon 1 VCS, build tools, dev tools, database technologies, etc. However, due to old methods of project management there's a really huge number of applications written by Shadow IT that trying to reign them in is very hard. I work on a team that's trying to replace them, but it's incredibly slow going, due to our having to adhere to old project management practices. At this rate I'm convinced I'll never see these shadow IT apps completely replaced and standardized.
At this point we've only chosen one cloud vendor. I'm not sure why (above my pay grade), but that's the way we've gone.
Your point about showing "... a lot of value to whoever pays you" is good. I can see you. However, I also see that once you start management sees you as good at X, they'll often only think of you as good at X. I'm sure that's true almost everywhere; indeed I'd like to be proven wrong.
I am continuing to learn. In fact this additional time I've been able to add a new skill to myself - Python. I've finished a course on Python, on LinkedIn Learning. And I've also started working with Jupyter Notebooks, something I've never done before. I would really appreciate learning more about Jupyter Notebooks. Was there a stairway series on Jupyter Notebooks here on SSC?