That's part of it, but not all and also not the most important IMHO

Excel clones simply don't cover the breadth of functionality provided by the OG, not to mention key UX features like countless hotkeys and menu accelerators

Every Excel user understands Google Sheets. They just don't like feeling like they're strapped to a wheelchair

Often they understand Access, they just don't have it.

Office Standard and Home & Business SKUs are without it, you need Office Professional Plus. Because it costs few hundred more for just Access and Skype, most workers will get the Standard one.

You actually need to understand the basics of relational databases in order to use Access effectively (unless you are only using a single table - in which case you might as well use excel).