Thank you for the note.
Any time a small company rapidly grows to 48 employees, getting future path decisions right are usually 'sink or swim.' Thus, I hope you're right WRT your view that Rachio's WiFi connectivity to the Internet capability (as opposed to having either/both WiFi and Ethernet) is adequate to support major penetration into commercial and municipal use markets.
I'll simply beg to differ. I'm certainly not going to specify or recommend the Rachio for commercial or municipal use with WiFi only connectivity, noting WiFi's security vulnerabilities and less reliable connectivity aspects.
Best wishes for sizeable penetration into commercial and municipal markets without Ethernet. I know you have smart people 'steering the ship.' They're smarter than me.