That feels a lot like allowing your computer to write blank checks, which is a tough sell for users. If it were me, I’d want to cap the payments at some affordable maximum level. The service would likely find ways to ensure that users almost always hit the cap, after which point the cap is basically a subscription fee.
This argument doesn’t apply to the Agoric computing case though, in which the microtransactions are being decided by the programs and not the human.
And for common kinds of online activity, should be cheap enough that users can ignore it.
That feels a lot like allowing your computer to write blank checks, which is a tough sell for users. If it were me, I’d want to cap the payments at some affordable maximum level. The service would likely find ways to ensure that users almost always hit the cap, after which point the cap is basically a subscription fee.
Most people do this for other utilities all the time though (like power)