You got it all backwards.
If the so-called blockchain technology will fail to get adopted by the industry in general, it would have absolutely no effect on Bitcoin. Why? Because Bitcoin is already stable from day one, it never failed in all these years and it is always working as intended - enabling global electronic transactions without centralized middleman.
If Bitcoin will fail, the effect it would have on blockchain industry will depend on the exact reasons of Bitcoin's failure: maybe it will be minimal or maybe it will be devastating if there are some fundamental flaws.