WTH happened to awesome boss music in games?

[t3mporary_126]

http://www.youtube.com/watch?v=raAp4xXNnqM

I doubt Pokemon ___ Version games are high budget (and they have been releasing every year since 2009, unless you're in Japan) but every time I hear this when facing a gym leader's last Pokemon, I feel more excited and tense than I should be.