Right. Forgot to mention that earlier. IIRC, two key useful features missing were the ability to import and use third-party components[1], and any built-in database-aware controls functionality[2]. They stripped out those two for the two Explorer versions.
[1] That is a key feature of such 4GL-like RAD tools such as VB and Delphi, and a major reason for their success, coming somewhat
close to the concept and holy grail of software reuse, like Software ICs/components, first propounded ages ago by Brad Cox:
https://en.m.wikipedia.org/wiki/Brad_Cox
https://en.m.wikipedia.org/wiki/Software_component
Adding a link for hardware ICs, the parent concept, which is also quite interesting:
https://en.m.wikipedia.org/wiki/Integrated_circuit
[2] Removing database controls was another bad idea, because so many apps, even command-line or GUI utilities (not just line-of-business or enterprise apps, need DB support in the programming tool used to develop them.
So they are restricting the ability to evaluate two very important Delphi features which can swing a buy/no-buy decision.