At the moment, it looks like the best accountants win, not the best global managers. We could give more credit to training and tactics that way.
Isn't those that manage their teams well, good at their finances as well? Tactics and training is only part of this game. The beauty of it is that you can play the game however you want. You don't have to persue a training regime if you do not want to.
Having said that, If the whole point is about making the B3 fair, then I do not believe this is the root cause of this problem. It comes from team's ability to load up and spend more than their income after having built a big buffer of cash that they can afford to make losses week in week out.
But why are they able to build up that buffer of cash? Most teams from competitive nations aren't able to as the competition level on their league will force them to have to spend big on salaries to maintain their level of competitiveness or risk relegation. Having to pay big salaries means they won't be able to build up that big buffer of cash.
On the other hand, it is the smaller countries where competition is low that the top teams there can afford to run a half competitive roster and still save up millions for that buffer of cash. Here is the reason why it is so advantageous to be playing in a smaller nation financially wise as you are able to save up to buy yourself titles so easily due to lack of competition forcing you to keep a full roster (close to your div's salary cap) all season.