The Future of XML with and without PSVI

Strategic decisions for the future of XML have been taken (implicitly or 
explicitly) when XSD Schema and PSVI were developed.

Were those strategic decisions strategic mistakes which need to be recognised 
as such and abandoned/rectified? Or is XSD/PSVI a far-sighted and 
well-thought-out innovation whose benefits are not yet adequately understood 
by the community of XML developers?

What do you envisage the position of XML being in 5 years time (or 2 years if 
5 is impossibly far away) if "pervasive PSVI pollution" is persisted in?

Andrew Watt