This is reasonable, lots of devs. those who left their projects when they were already making big profits, they preferred to make new projects rather than make their projects grow because managing old projects was difficult.
true, that is why many investors are now losing confidence in the ico project. many projects fail because investors have no interest in investing in them. they are afraid after the sale is finished the developer leaves their project and the investor loses a lot of money.
Hopefully in the future there will be many real ico projects working to develop their projects.