In my opinion alt coins will survive. Not only that, but some of them have real potential to become valuable coins in the future. Also, there are way too many new ICO's with great ideas and I am absolutely sure that some of those coins will become valuable as well.
You are correct, altcoins will survive especially to those altcoins that has good foundation and better technology. Top altcoins like ethereum, neo, litecoin, dash and monero are those altcoins that are proven to stay and rise high at the market. Best to invest those altcoins now while they are still at a cheaper price then hodl until the market recovers. They will bounce back within this year and im sure it will happen.