It was, briefly. Long before Wi-Fi was a household name when 802.11 (no b) was just standardized for industrial use there was an FHSS PHY. I think Proxim or one of the other defunct industrial data capture companies sold it into the 2000s.
In any case there’s a lot of overlapping commonality in the information theory and engineering of frequency hopping and more modern SS.
No, but an early wireless midpoint between nascent wifi deployments and really shitty WAP in a world before data over cellular networks was Ricochet Networks. Frequency hopping over the public bands of the era (900MHz mostly I think) it was able to give decent wireless internet in the mid 90s to those of us living in supported areas of Silicon Valley. When laptops were a new thing and public wifi still years away it was fun ‘work remote’ in some corner of a coffeeshop when everyone else was chained to office desktops.
In any case there’s a lot of overlapping commonality in the information theory and engineering of frequency hopping and more modern SS.