Oh man I was hoping this would be a sub for alternatives to subscriptions, rather than just pointing out that everything is going to a subscription model.
Alternative to subscription based mouse.......any other fucking mouse. Hell, I'd rather use that piece of crap they sell at walgreens for $15.99. It looks like crap, has only 2 buttons, is wired, but it doesn't have a damn subscription.
I got two like that from China for about 2 bucks each, shipping included.
Nowadays a shitty 15 cent microcontroller comes with built-in USB hardware support and you can use the manufacturer's libraries or even Arduino to make it talk as a keyboard or mouse with any computer (which doesn't even need drivers since support for it is built-in) and it's actually the mechanical stuff that's the most expensive bit.
There really is no reason or need to endure this mouse subscription shit.
I like my Intellimouse Pro. I haven't had a single issue with clicking or scrolling for as long as I've had it (5+ years?). It's a bit pricey, but it works well. I've spent more replacing Logitech mice in the time I've had that one.