The idea is to stabilize prices, people. A price-war (which is what online sales is) is a race to the bottom. If Shop A offers a 10% discount then in order to compete Shop B marks down 15%. Then Shop A marks down 20%. Then Shop B responds with a 25% markdown.
Before you know it these shops are selling product and they're only making enough money to pay a few warehouse employees $8.25/hour.
What happens to your FLGS during all this? They go out of business because they can't mark down 25%. They need to pay rent. They need to send their kids to school. They need to pay their employees enough to put gas in their car. They need to pay electricity to keep the lights on after 8PM so YOU CAN PLAY YOUR GAMES IN THEIR STORE.