I agree. I'm not sure how it at other companies. Both at my current company and previous one, line managers had a misc budget of $2000 before needing oversight,

I agree. I'm not sure how it at other companies. Both at my current company and previous one, line managers had a misc budget of $2000 before needing oversight, with bigger numbers as you went up the leadership chain, but I never interacted with those types frequently enough to ask. This was for one time purchases only. Recurring charges i.e. SaaS offerings would need to go up to the division head for approval, which means effectively no unless it was essential stuff like Jira/Bitbucket, Office, etc.