Yes, they absolutely make these as dumb switches. But the smart switches are a different story because you would need three radios unless it’s a multi channel switch, as I mentioned. The radio units themselves are fairly large plus there’s an issue that code restricts the number of wires that can be in any one box, so by the time you try powering all three of the radio units you can start to exceed code that way.
Leviton used to make a Z wave device with two switches in a single gang, the VCRS2, but they discontinued it. And they never made a three switch version.
The battery operated multibutton scene controllers don’t have the same code issues because they aren’t going inside the wall and they don’t have wires