it may or may not be a good idea from the fans' pov. in one way it's a shame as each tournament has a particular identity, and there's a lot more nationalities mingling. if they want more fans to have access then they need to first look at their awful prohibitive ticket pricing.
mainly i think it reflects the fact that staging a major competition in its entirety is a luxury very few (if any) countries in europe can afford.
without something like this, spain, greece, italy would probably not bid for anything for many a year, whereas the odd game here or there they'd be more likely to.
of course it's as much about kick-backs as anything too. but again, if more people can bid, the money the corrupt cunts can demand gets driven up.