My understanding of these things is limited, but I think the most interesting thing about them is that open APIs seem to be the default way to interact with them, not something tacked on after the fact, and you don't have to beg for an API key for each one, contact a salesperson, or whatever. If these things proliferate, it seems like one could compose mashups of services to build online things relatively quickly.
Also, for bitcoin in particular, the lightning network makes it possible to pay a fraction of a cent for something, which is not possible with a credit card, and it potentially offers a uniform location/country-agnostic way to pay for things online. Stripe has made that much less of a problem than it used to be, but I'm not sure it's quite 100% global coverage yet, and afaik they have no solution for micropayments.
Also, for bitcoin in particular, the lightning network makes it possible to pay a fraction of a cent for something, which is not possible with a credit card, and it potentially offers a uniform location/country-agnostic way to pay for things online. Stripe has made that much less of a problem than it used to be, but I'm not sure it's quite 100% global coverage yet, and afaik they have no solution for micropayments.