So the reason meanwell limits only 2 drivers per Breaker B type is because its likely to trip our electricity, not because it will damage the drivers using more? In that case if we had unlimited Amperage/voltage breakers, we could power 200 drivers at once?
The electricity trips for reason, or actually 2 reasons.
The first is to prevent electrocution, the second is to prevent fires.
Wires heat up when electricity flows through them. The thicker the wire, the less its resistance, the less it warms up.
If you try to push more than 16A on 16A wires (1.5 square mm solid copper, or about 16 AWG if you're in NA) they will heat up, melt the insulation and cause fire.
This is also a matter of timing.
Each wire has a rating of how much current it can carry for 10 seconds, 1 second, and few milliseconds before reaching a temp of 60 degrees Celsius.
Usually 16 gauge wire can take up quite a lot for 1 second or less.
But again, it depends on the insulation, whether the wire is in air or inside the wall, etc.