$10K seems like a lot.
If Slack is going to round out at $100/a/staff member ... then how on earth does that number creep to $10K?
I think there might be some 'crossing of streams' in this data, for example, perhaps they're including general services like AWS in there, which I'm not sure makes sense because conflating product-related IT charges with other services isn't helpful. Also relevant is the fact that said AWS product or IT charges would be borne anyhow.
I think dividing between 'productivity/IT' kind of spending, and product-related services would reallly help, also, comparing that $10K to historical, non-SaaS numbers would help as well.