You are absolutely right: for employees to be able to work anywhere, on the go, using laptops, desktops, mobile phones is very important. However, that can be realized with a NAS just fine now. Maybe back then when you started your business NAS was not as developed as it is now (software-wise).
But it is great getting to know how you ended up with Google cloud. Are you satisfied? Or do you feel like you pay too much? Google cloud has so many awesome features, but it seems expensive. 4TB storage is like 650 USD a year. Also, I was wondering do you use a NAS for a Backup of the cloud, or do you trust Google enough to avoid that?
Anyway, it would be generally cool to hear how other start-ups on this platform are doing it.