6 months is fast. I sold our first on premise customer. $1M internal budget to simply hook up the hardware. The project was delayed a year due to budgeting and logistical issues. And this is a large financial institution, which is used to managing on premise hardware.

Also, it's expensive, but cloud is a competitive strength. If you manage your own hardware or VPS, that is not only a reliability risk, but a huge competitive weakness in B2B. One of our competitors use "we are the only true cloud vendor" as FUD.