New kids seem very spoilt. How do we ensure our kids turn out fine?

It's something I've noticed over the last 5 years, kids these days are super confident (great for them) but have little to no respect for others or elders

At least in posh societies, I think this has changed drastically.

An example from today

• kid enters elevator and starts jumping aggressively. I gave him the death stare

I know this is small. It's just I cannot fathom what the thought process is. And while this is small, I often see parents absolutely failing to have any control over kids.

Even if you try to raise your kid right, they will have other spoilt friends...

Whats the solution? What do you guys think?