Only in Eastern Europe, where Dynamo Berlin and CSKA Sofia, for example, were sporting arms of the state. But it's not at all true in Western Europe were IFK Gothenburg, FC Porto, Aberdeen, Dundee United, Austria Vienna, and Club Bruges were all powerhouse clubs.
To prove that point, each of those sides had huge rivals in their own countries to overcome - and the league title in those countries was anything but a foregone conclusion. Malmo, Benfica, Celtic, Rangers, Rapid Vienna, and Anderlecht were all top clubs in those countries and in European competition.
Eastern Europe was corrupt. Today, well, it's no longer constrained to that part of the continent...