- 10 hours / month of maintenance + 200 hours of setup @ $60/hr = $13k in the first year, not including any infrastructure costs.
If you just redirected that money to a hosted offering you'd get significantly more powerful servers without needing to allocate engineering / management resources - it also makes it significantly easier to push updates & monitor uptime on the host's end.
Even traditionally hosted tools like Atlassian's suite are moving to cloud for the same reason: https://www.atlassian.com/migration/journey-to-cloud