Recently, I've been doing more design work in Figma and I find moving my hand between the mouse and keyboard aggravating. It kind of defeats the purpose of having keyboard shortcuts if the key is on the side of your mouse hand.
This got me looking into programmable mice, but I've discovered that there really aren't many and very few are targeted towards productivity. Why does this category seem to not exist while the custom keyboard space is so vibrant? I would image that there would be a niche but decent sized market for a productivity-focused programmable mouse.
Maybe I am using the wrong search terms, or is the demand for this type of product really that small?
That said...recent software (such as Figma) has spanned an awkward gap of trying to be equivalently usable on desktop, tablet, and phone. Maybe a programmable mouse for a device that's typically not used with a physical keyboard (tablet, phone) makes sense, and the idea hasn't been explored thoroughly.
From what I understand there are many gaming mice with multiple programmable buttons. The razer naga has a 12 programmable buttons which is probably used mostly in RTS games like starcraft.