They can publicize their brand with a node. Moreover, if they want special functionality they may have to run their own node. In general, running nodes is so ch

They can publicize their brand with a node. Moreover, if they want special functionality they may have to run their own node. In general, running nodes is so cheap that is not prohibitive to wider audiences. Today there are easily more than a hundred nodes running, exchanges, services, etc. The number is bound to increase as the ecosystem grows.