That's the "proper" American stance to assume at home

As global travelers, depending on the countries you are landing on next & local custom, you might be doing the opposite instead - stand to the left, walk & pass on the right. When unsure, look for & watch the locals - follow them.

Not all escalators/travelators are designed for those of us with oversized spinners or rollers doing the 100 yards dash for that final boarding call that we sometimes must tried to make at various airports or terminals. While standing still for that 30 seconds, it's often enough time for me to quickly scan my smartphone for SMS & email alerts and flight updates, etc. - can't really do that while walking ...

If we aren't running down the clock, we stand & let foot traffic pass - if we are in a hurry, then we kick in the afterburner and walk - inside airport's people's mover walkway - ORD - it's often "faster" to not use them & just speed thru around it.

It's common sense & matter of courtesy, and not against the laws or administrative regulations, annoying as they often are.