Huge Dapp growth
Since April 2017, the number of Dapps has grown hugely.
Certainly a number of the early ideas have been abandoned, perhaps due to the drop in crypto price (programmers cost money), but give the short supply of talented individuals, they probably move on to bigger, better and more relevant apps.
The crypto world has changed so much in the last 18 months, in another 18, who know where we will be at.
In the mean time devs are all looking to build the next big thing, for right now, tomorrow the landscape will be different.
https://sludgefeed.com/17-percent-of-all-dapps-are-abandoned/