Lots of altcoins will not survive but we will still see a large number of altcoins in the market despite the attrition.
There will always be new ICO and some will learn to adapt to the new environment and evolve but there will be those
that find the future environment of new govt regulations too stifling and will find themselves losing market share.
Relook all your portfolio properly.
Btw dun sell all your altcoins at this moment...it will be coming back