If we were selling hardware, we'd call this an "embedded system." It's where we take a computer and use it as part of an instrument's core. The outer case may only have a few buttons to press. The complexity is hidden from the end user. Functions are relabeled to match their specific niche jargon to reduce the learning curve. WordPress is becoming an embedded system for several reasons.

1. It allows niche marketing which always is more profitable.

2. WordPress has come to be synonomous with cheap or free. It's hard to maintain a living when clients know you have little or no parts cost. Not knowing WordPress is involved allows for higher fees. Admittedly, WordPress has insistence value for some clientel. But they are not willing to pay extra for that. They expect a price reduction.

3. It allows simplification of the user interface (UI).

4. The UX can be customized for the expectations and "pain" of the niche market.