I'm going to give a counterpoint rather than disagree.
While pouring all resources into a championship window at the expense of an anticipated extended rebuilding period is certainly a model that many clubs follow, it is not the only one and is not definitively the best one. It just depends on what a club and its fans value. Were the Marlins more successful than the Braves in the 90-00s because they won 2 titles to the Braves 1? Arguments can be made either way, but there is no question which club is more stable and has a healthier fan relationship.
If the model is to give yourself as many chances to make the playoffs and therefore a championship then the value of future years is every bit as important to long term strategic thinking.
Wanting to win the most right now and not worrying about the future sounds great until you go through the future. And when you get there, the people that wanted to sacrifice everything are often amazing forgetful that they knew the consequences when the strategy was taken.
It's not dissimilar to tanking in theory and tanking in practice. Even the biggest proponents of tanking will bitch bitch bitch when the team is bad and makes moves that aren't calculated to getting better in the short term. And the survival rate of GMs who propose tear downs followed by tanks isn't so great. It takes an awfully patient ownership group.