Cosmetic only but zen...
When you don't have any commerce sites, it doesn't make sense to have the Revenue column in the All websites page.
Maybe add a checkbox in Manage Websites=> Global websites settings => Default Currency for new websites :
[X] Hide column "Revenue" in All Websites page.
Thanks for the suggestion!
+1! Not needed on websites that aren't ecommerce
"I'd like to be able to remove the Revenue column. I use Matomo for personal side projects that, for the most part, don't generate revenue."
Note: The revenue column is automatically hidden if the Goals plugin is disabled. Goals might also define a revenue value, so hiding the column if only ecommerce is disabled might not be the best solution for all cases.
Nevertheless I'd suggest to close this one in favor of #2390