Maybe something to your theory but I'd also bet that the expansions of entrants -
Albania
Andorra
Armenia
Azerbaijan
Belarus
Belgium
Bosnia & Herzegovina
Bulgaria
Croatia
Cyprus
Czech Republic
Denmark
Estonia
Finland
France
FYR Macedonia
Germany
Greece
Hungary
Iceland
Ireland
Israel
Latvia
Lithuania
Malta
Moldova
Montenegro
Netherlands
Norway
Poland
Portugal
Romania
Russia
Serbia
Slovakia
Slovenia
Spain
Sweden
Switzerland
Turkey
Ukraine
United Kingdom
when combined with tactical voting by countries who actually want to win this pale imitation of a bad talent show.
Combined with blatant politics in what was supposed to be a exercise in european harmony.
............. WHOAAAAAA
I'm taking this far too seriously ..... Eurovision in just plain old shite