Why are low code/no code platforms still so expensive in 2020?

I truly expected that 4GL's (fourth generation languages) and low/no code platforms would come down in price.

OTOH, “still so expensive” may be a suspect assertion because there are some low code/no code platforms that are open source (hence “small” cost of ownership). I need to do some research on some open source 4GL platforms. Could any be used with Python, to make an equivalent to my old IMS-based code framework (Database System- IMS is Interactive Management Systems, a small software house I worked for 30 years ago)

I have not re-visited this technology for many years (particularly open source forms of 4GL's). I wonder if there are better offerings, now.

FWIW, I do believe that such platforms are much less a threat to the future employment of folks like me, than is the current modern menace of AI-driven “coding ‘bots”.