"This happened recently, when Litecoin adopted Segregated Witness. The technology was designed for Bitcoin by Bitcoin developers, but was actually deployed on Litecoin’s network before Bitcoin adopted it. Even though Bitcoiners did all the work, Litecoin benefited before Bitcoin did.
In the meantime, innovative altcoins continue to develop new features that Bitcoin can’t - or won’t - adopt for its own. Bitcoin is too big to take the risks that many altcoins can take. After all, it’s much easier to risk breaking a $100 million network than a $70 billion one."
More: https://cointelegraph.com/news/altcoins-use-bitcoin-ecosystem-to-leapfrog-forward-grow-faster
That's true, we should aim for bitcoin to be stable and growing slowly. If we want volatility and breaking stuff, we should go for alt coins. And again, I recommend SLVR for new altcoins.