Showrooming is done to decide what product to buy over another or get a quick overview of what's current and available. These things are not impossible to do online. If anything they are much more powerful since they can be customized. Amazon understands this and I'm sure they are investing a lot of money to improve the experience. This experience will only improve online.

There will most definitely be a tipping point where the brick stores will see most of their revenue disappear to online shops ... regardless of showrooming happening in their stores or not. Online is just the way to go.