Bayern & United do spend the money they earn...that's why their spending dwarfs Leipzig's...
You don't see anything positive from an exciting young team arising in a part of the country that had otherwise been left in the footballing wilderness of BuLi2 & below, but which now hosts a passionate fanbase in a traditional football city? Leipzig aren't anywhere near as bad as Leverkusen, Wolfsburg or Hoppenheim; they have a really big local fanbase that has embraced that team & given them actual atmosphere at their home ground. Nor do they poach the rest of the league as much as Leverkusen, Bayern & Dortmund do.
Complaining about Leipzig has just become "old man yells at cloud" to me