Not true at all. I have stood up some of those projects in this post and when I left the org,there was no one else to support them and it became cheaper to pay

Not true at all. I have stood up some of those projects in this post and when I left the org,there was no one else to support them and it became cheaper to pay some vendor to give you an appliance than run it all in-house. With abundance of internal staff who can support it,opensource is viable but not always competitive either.