TitleServ National, a Woodbury, N.Y.-based provider of title insurance, appraisal and settlement services, apparently exited the business on April 8, according to industry sources. An executive with one of TitleServ’s competitors, Elliot Foo, the president and chief executive of Closing USA, commented that it is becoming more and more difficult for the mid-size players like TitleServ and his firm to compete against the large national service providers on one side of the spectrum and the small local firms at the other.