New cryptocurrencies entering the market are offering lower entry barrier but only lack the popularity or dominance BTC has. I'm a superfan of bitcoin protocol but I still don't get why we can't have a tradeoff.
BTC adoption (for mainstream merchants and highly sophisticated transactions) as against scalability. It's not like everyone in the world owns gold, so why should BTC become a 'world-currency' either? The few people who can have it should cherish it and only use it for more exclusive financial functions.
However, I still believe LN should be perfected, but adoption and current use cases should be well established and deeply rooted in the economy.