Even if the market does not recover at a rapid pace and many altcoins will gradually die, this does not mean that the blockchain technology will also die with them.
Basically most of the altcoins will be wiped out on the market if the dumps and dips continue for a year. I aggree on what you've just said about blockchain, Even if the most outstanding Cryptocurrency or bitcoin will perish the blockchain technology can still be used on other fields such as data storage, or being a ledger for real estate and so on and so on.