I disagree. Delphi is still great, and with a less tone-deaf it could get very well.
Note that Delphi still have a healthy position today:
https://www.tiobe.com/tiobe-index/
(Position 9, above Ruby! and others!)
(As much as we can debate about Tiobe and other indexs, is important to note that is still way higher that many will expect, and the flow of information we see in the community is very good, much more than many other hispers options)
The thing is that price is in fact the main problem. This kill the open source ecosystem options around it.
I will totally, like many others (I know, I'm moderator in on of the most important forum in Latin-America) work more for it but without a way to reach a large audience it kill many ideas we have.
Delphi was the most sucesfully opensource but commercial (as, you have the source) with many thirdy-party options. Think like the current React-Components market but maybe larger and years ago.