user115085: If BTC hits 10mln$ and transactions fees will be horrendous denominated in $, how a "common guy" will be able to opt in using Bitcoin, if even opening LN channel will be too expensive then since it requires on-chain payment? As I understand the only way for him would be to rely on third party which would'nt be very different from using a bank.

user5406: I assume that people will have more refined ideas by the time this would actually appear on the horizon, but here are some ideas:

channel factories
Custodial Lightning Wallets, i.e. "Lightning banks"
atomic swap from a payment focused sidechain
purchasing spendable LN balance on other users' Lightning nodes via macaroons that permit spending a specific amount

Or more generally, I suspect that people would develop third layer solutions that permit multiple users to share Lightning Network channels effectively.

115085: <p>If BTC hits 10mln$ and transactions fees will be horrendous denominated in $, how a &quot;common guy&quot; will be able to opt in using Bitcoin, if even opening LN channel will be too expensive then since it requires on-chain payment? As I understand the only way for him would be to rely on third party which would'nt be very different from using a bank.</p>
 5406: <p>I assume that people will have more refined ideas by the time this would actually appear on the horizon, but here are some ideas:</p>
<ul>
<li><a href="https://bitcoin.stackexchange.com/a/67187/5406">channel factories</a></li>
<li>Custodial Lightning Wallets, i.e. &quot;Lightning banks&quot;</li>
<li>atomic swap from a payment focused sidechain</li>
<li>purchasing spendable LN balance on other users' Lightning nodes via <a href="https://blog.lightning.engineering/announcement/2020/01/22/lnd-v0.9.html#security" rel="nofollow noreferrer">macaroons</a> that permit spending a specific amount</li>
</ul>
<p>Or more generally, I suspect that people would develop third layer solutions that permit multiple users to share Lightning Network channels effectively.</p>
