Watches, not gps units. Why is the garmin approach unit and garmin bike gps different products? why cant I get a unit that can do both of these things and also

Watches, not gps units. Why is the garmin approach unit and garmin bike gps different products? why cant I get a unit that can do both of these things and also abrogate hiking trail maps? Storage is dirt cheap in 2025 is it not? So I don't think its a matter of cramming a limited number of functions on a few kb internal storage like the old days.