I may be wrong but I cannot understand why so many stations play so much dance on the weekend nights...surely most folk who want dance will be out and about, earlier in the evening would be better when people are getting ready to go out...more regular programming would be better later at night in my mind.
The only logic I could bring in is that a lot of people into that type of music are no longer able to go out - ie if they've got kids - but are still into that sound. In which case it seems to make sense.
The generational shift we need to get ready for is when people who grew up in the 90s reach their 40s. That's not very far away.