Why are kids' birthday parties getting so insane?

Got invited to my son's classmate's 8th birthday party last month and it was held at a TRAMPOLINE PARK with a professional party coordinator. Professional. Coordinator. For 8 year olds bouncing around. There were like 15 kids, a DJ, and someone face-painting the entire time. The 'gift' suggestion was minimum $30. I showed up with a $20 Lego set feeling like I showed up in a clown costume.

I just let my kids invite a few friends over, we do cake and ice cream in the backyard, maybe play some games. Cost me like $80 total. When did this become the expectation?? Are other people just doing this all the time now or is my area insane?