This is because the market standard was and is $50. It's of no surprise that developers are reticent to pay inflated prices that aren't in line with comparable products.

If everyone else in town is selling coffee for $4 per cup, even the rich people won't patronize a store selling it for $5.

It's all about perceived value, which is ironically the point the post is trying to discuss. People seem to not think they are getting $70 from their text editor, that they use on a daily basis, often for commercial purposes.