That includes an estimate of the time spent negotiating with the client. I worked as an architectural draftsman for a while, my employer spent at least twice a

That includes an estimate of the time spent negotiating with the client. I worked as an architectural draftsman for a while, my employer spent at least twice as much time (usually more) negotiating with clients and getting their approvals than I spent producing the drawings. And most businesses are worse, because more people and approvals are involved.