ICO projects began to be abandoned since entering 2018. Besides due to the bear market factor which makes the market conditions become quiet, enthusiasts, ICO has also been considered a scam project and started to be replaced by IEO.
I think that the bear market doesn't give a lot of contribution to make ico to be abandoned but the scammers should be the main reason why so many people have started to abandon the ico in the past. We know that more than 95% icos on the market were scam and it has also increased a lot until the end of 2018. In 2019 so many scam IEOs were also appearing to the market.