In the mid-2000's, I built a lot of applications replacing Access. I always met with the actual users of the system, and made sure they understood that once I took over development, they weren't going to be able to build out their own forms anymore. A few clients were turned away, but most could live with paying for myself to make any future edits, so that they could concentrate on the business objective rather than coding in Access. I never really had the same success with replacing Excel, except for a few systems where it needed to be true multi-user.