Earlier quoted context omitted.
Delphi was really a "Concorde moment" in that it was actually rapid , both in terms of development speed, and performance, which was somehow forgotten as the web emerged. Forgotten to the point that people thought Visual Basic was a good idea.
Delphi was great but a major deal breaker was that is was not free to use.
The real dumb move (though TBH i can only say that in hindsight) was that they made a free Linux version with Kylix, the license required any programs released to be under GPL but they didn't release Kylix itself as GPL.
This was in very early 2000s, when GPL wasn't the boogieman among developers that seems to be nowadays with all the permissive licenses, desktop software was still something people wanted, commercial software wouldn't touch GPL and yet a lot of new programmers were onboarding Linux. Having Delphi/Kylix full GPL with a CLA (like some other projects) would mean that a) Kylix would become part of various Linux distributions, especially during a time when distributions were the main source for tools for Linux users, b) anyone working on FLOSS would both use and improve the tool, c) mindshare among programmers would improve as anyone will be able to try it out for free (as long as they used Linux, but many programmers - especially younger programmers at the time - didn't mind that), d) companies, enterprises, etc that wanted to sell shareware or just didn't want the rules GPL imposed would still need to buy the full program
Sadly this seemed to be yet another case of when Borland started losing touch with programmers in the 90s.