Its interesting whether the project will stop developing in the future. As for me, i think that they shouldnt stop with servicing traders and brokers. They should expand their target audience.
It seems to me that there will be enough of clients of such sort and the project will be able to make good profit.
Itll be like that for the first time. The market will be saturated in several years, the competitors will appear and the companys income will start decreasing.
Thats what theyll do. For example, their services may be suitable for many of projects who will accept payments for their services in cryptocurrency.
This is an adequate option, IMHO. If therere already some ideas now, new ones will appear in the future, in addition, new technologies will appear, and etc. In general, the project management has long-term plans.