[s73v3r_]

"How do credit/debit cards satisfy the proposition of a decentralized marketplace?"

They're something that most people are actually using, allowing the marketplace to actually conduct commerce and exist.

[antidesitter]

Does a cryptocurrency-based market not conduct commerce and exist right now?

And again, how do credit/debit cards—which are centralized systems—satisfy the proposition of a decentralized market?

[s73v3r_]

Not for most people, no.

"And again, how do credit/debit cards—which are centralized systems—satisfy the proposition of a decentralized market?"

They allow the market to actually exist, by using something that the people are actually using.

[antidesitter]

They allow the market to actually exist

But a decentralized market does exist with cryptocurrencies.

And credit/debit cards aren’t decentralized.

[s73v3r_]

"And credit/debit cards aren’t decentralized."

Doesn't matter. That's what the majority of people are using; so if you want the marketplace to actually be able to serve people, and get them to actually buy stuff, you need to support them.

[antidesitter]

What the majority of people are currently using is irrelevant. The whole topic of this thread is creating decentralized markets, and you're saying the fact that these payment processors are centralized doesn't matter. That doesn't make any sense.

[PascLeRasc]

It sounds like a good compromise would be to allow people to check out with a credit card/paypal and have an instant conversion to BTC behind the scenes, maybe with a 2% fee or something.

[s73v3r_]

"What the majority of people are currently using is irrelevant. "

Not if you actually want your marketplace to be able to, you know, sell stuff to people.