It might be partly a US vs. UK/EUR thing, where the latter are more comfortable with compelling industry to just do a thing. And the former is very uncomfortable with that.
In the US, open banking would probably look more like "the IRS requires a bank to have accounts readable using these formats, or otherwise be able to provide same manually, when requested" to prod industry to do it.
In the US, open banking would probably look more like "the IRS requires a bank to have accounts readable using these formats, or otherwise be able to provide same manually, when requested" to prod industry to do it.