There are lot of crypto currencies that were created to compete with BTC
BTC lightning network is implementing due to the scalability issues the chain is experiencing with high 'fees' and transfer times..
If lightning network is implemented in Bitcoin will it destroys these competitors?
I don't think so, there are so much coins out there with much more advantage, technology even better than lighting network and still...being dumped so hardly.
but anyway, I still hope that release some news would make market comes alive.