Its starting to be a trend. Registrars are seeing that the market is saturated, and looking for more markets.
going into the internal audit fields has many advantages to the registrar. This activity isn't audited by the RAB and there is less overhead. But the registrars who perform internal audits will have to give up their Registration work with the same company.
It is a conflict of interest to do both internal audits and registration audits. But the registrars will gladly give up the registration side if the internal audit side makes them more money.