most newcomers already use custodial wallets no matter which coin they use.
so, the more important is that Lightning Network "gates" are broadly open like Binance LN support hopefully, and the snowball effect may appear, regardless of on-chain fees and newcomers will learn very quickly, when is the proper moment to move sats into on-chain wallet if necessary...
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the snowball effect already started. binance is adopting lightning because is being used. not the opposite.
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...because Binance is cancer for Bitcoin :)
Bitfinex LN support, for example: September 2020
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