Mobster that sounds very logical but I guess DAZ (like many US-companys e.g. IBM, Oracle, ...) rely more on these two historical statements:

1. britain rules the waves but america waives the rules (from america cup historie)
2. pacta sund servanda (latin from very long ago)

Second one is unknow e.g. to Donald Trump. I guess he had not have latin in school ...

Both together means US is a land of lawyer and even if something sounds logical it needs not to be successful in law suits ... I would not try to discuss law things with companies able to pay dozends of lawyers even if I'm sure to be on the right side. Very very sad but true ... so no actualized V4 although the girl is it worth and the invests into all these content would be a very honest argument.