This has also been my experience. Clients will always try to push as much as possible. Ie. if a task is now faster to do, the client will ask for that producti

This has also been my experience. Clients will always try to push as much as possible. Ie. if a task is now faster to do, the client will ask for that productivity improvement. It makes sense, if you continue to charge the old price and "keep" the productivity improvement for yourself, the client will eventually go elsewhere, where the productivity improvement is passed to him. You can somewhat mitigate the problem if you do creative work.