I can't image why you think "people must use lightning through a trusted third party (like lightspark)" First of all, who is lightspark? Never heard of them. Secondly, assuming your point is about custodial lightning solutions, why not use liquid, or eCash like Cashu? Or run your own lightning node and be your own custodian? Or just stay on chain for now because the cost of a TX is almost always 1 sat per byte these days. The greatest thing about bitcoin's scaling solution is that it's not set in stone... It's a free market where anyone, from you to JP Morgan can add their own "layer 2 solutions" to make bitcoin payments practical. Many have, and the market will decide in time which everyone wants to use.