I work in a small IT business, where I regularly setup notebooks or pc for the customer and install the software they need for work.
I always remove copilot from the Taskbar and the startmenu. Also usually install firefox with ublock origin, in the hope that they will try it out and get the ad-free experience in comparison to chrome and edge.
Its not much, but it honest work.
I just right-click on copilot on the taskbar and remove, same with the startmenu. Im not uninstalling it in case someone suddenly “needs” it to save me some trouble plus its just a few clicks this way.