Everyone knows what a VPN is. But beside Substratum (who discontinue development) and Sentinel, there is no network offering VPN clients for all major operating systems that cover all traffic from and to the device and are not just a browser addon like BitTube. Furthermore, Sentinel is quite expensive charging 0,10$/GB at the moment. You could cut this price to a fifth asking 20$/TB as for storage egress bandwidth. There are many idle nodes on the network totally unchallenged compared to what they could deliver. A decentralized network for routing web traffic at affordable cost would be an exceptional addon, not to mention that due to the diverse network with nodes in all major countries, you could offer servers in most locations of the world giving everyone the chance to be where they need to be in order to bypass geo restricted content.
Many people nowadays use a VPN – offering such a product could bring the attention of and use by the mass market.