will all block chain's survive?

No, not all blockchains are likely to survive in the long run.

Many blockchains are launched with limited use cases, poor security, low adoption, or unsustainable economic models. Over time, only those with strong communities, real utility, active development, and secure infrastructure are likely to persist.

Just like in the dot-com era, the crypto space will probably consolidate around a smaller number of reliable, well-supported chains—while many others fade away or get absorbed

It's crucial for investors to conduct thorough research and choose blockchain projects with solid fundamentals for long-term success in the crypto space. Quality over quantity is key in this evolving industry.