You need strong players and a strong roster and however you loose!
Reality check.
Well, this is a multiplayer game, so you will always be playing against other managers. That means, unless you are a superior to your opponents you should lose about 50% of the time. After all you are competing against 15 other teams for that promotion every season, making a division in less than 7,5 seasons makes you better than the average.
Now, there are any ways to be superior, and it is a long way to every one of the. Having a bigger arena, better calibrated arena prices, better salary-efficient players, better at scouting and guessing your opponents tactics and weaknesses, etc.. In any way, it is hard to have the upper ahand on all of these at the same time. (to the point->) Playing in a small country as the only dominant force could give you the power on all of these, but that would be the equivalent of poking an ant hill with a stick. Does make you feel like a man? Didn't think so..
What I percieve from most of this thread is that some big countries teams are dissatisfied with not having the possibility to play bot teams and buy better players than their opposition, non? The first part there is little to do about, the second is a neccessity to manage the steep level of opposition a new manager in a small country meets. As Superfly mentioned you will, as a new manager in a small country, meet a massive resistance and get pounded every game, taking the fun out of it and prevent you from committing to the game. Imagine that once you start a team in Spain you had one "easy" season, then were pitted in the current level of ACCB. That is the reality for an underdog small country team. Yes, they have bigger spending power in the beginning, but much less than their rivals, whereas a big country team meets more equal competition. Now, who needs it the most?