Not exactly sure what you're getting at. Yes I open a channel with say "the bitcoin company" and buy their product. Eventually all outbound liquidity becomes inbound liquidity. But if I want to make another purchase I still need to get outbound liquidity. I'm in the US and there are few options to get bitcoin on lightning outside of my own biz. I used to use robosats but for folk in the US that option is mostly gone. Plus pricey. All I can think of that's available is cashapp since it supports lightning but pricey as well. To avoid having to fund my lightning onchain wallet and pay loop in fees I've used breez lsp to fund via onchain then send it to my node on lightning (since I have all that inbound liquidity). I've also toyed with the idea of using alts to lightning btc but the only service supporting that is fixed float and they block the US. The other option is liquid btc to boltz. I've had boltz exchanges fail on me in the past costing me double fees to fund and refund onchain btc. But liquid is cheap so it may be an option even if it fails.