We are now moving fast to the Trust Infrastructure with EUDI-compliant general purpose automatically interoperable identitywallets for all parties - the data source, the data rights holder and for the service provider. This means that there will be the same interface for all. Obtaining and passing on verified credentials here can be likened to e-mail - no need to sign service contracts and no need for technical intergrations.

Naturally some IT-work to link the wallet application to the sending and receiving systems - but that is not expensive and once done for one backendsystem towards the wallet it will work all over the world for that particle system version. 

McKinsey has estimated that the migration to the Trust Infrastructure with decentralised data and Self-sovereign Identity wallets will lead to a 3-6% GDP growth. The EU-commission arrived at "only" 2%. Many initiated observers consider these to be on the low side - also as Self-sovereign Identity has so much to offer for better results and ethics in artificial intelligence.

One way of describing why the productivity leap can be of this magnitude in more practical terms can be seen in the picture below (picture from messy electricity pylon somewhere in Asia - which cannot be assigned any more here?)

I will show it in my LinkedIn post... please check there  https://www.linkedin.com/feed/update/urn:li:activity:7135617733177524225?utm_source=share&utm_medium=member_desktop