Honestly, you're right - 2̶7̵ 87+ (correction from sibling) hours per year is absolutely fine & normal for me & anything I want to run. I personally think it should be fine for everybody.
On the other hand the baseline minimal Github Enterprise plan with no features (no Copilot, GHAS, etc.) runs a medium sized company $1m+ per annum, not including pay-per-use extras like CI minutes. As an individual I'm not the target audience for that invoice, but I can envisage whomever is wanting a couple of 9s to go with it. As a treat.