Bandwidth is expensive, especially when you're streaming Netflix in 4K. Instead, it was designed to handle large quantities of data shuttling between places in the most cost-effective way possible.
Standard internet traffic routing wasn't intended for low-latency gaming, like playing Brick Rigs with fast ping times. When you use WTFast, you can select a Proxy Server that sends your traffic directly to the game server instead of leaving your connection up to chance. WTFast allows you to reduce the number of hops to get much closer to your game server. There are multiple hops between your home internet connection and the Brick Rigs server. Operating in less busy airspace allows private airlines to fly faster than the usual commercial lines, often allowing business people to get to their destinations more quickly. For instance, private airlines fly higher in the air than standard commercial airline routes. Think of WTFast a bit like a 'fast lane,' where there are fewer cars on the road or fewer planes in the sky. WTFast is a utility that helps redirect your internet traffic from the 'regular' internet to a private connection.