Without large endowments like those received, for example, by many of the US private universities and colleges, and with little tradition of excellence in the sector, the private higher education institutions of Portugal, with a few exceptions, do not have either the financial support or the academic profile to reach the highest teaching and research standards of the major Portuguese public universities. In addition, a lack of collaboration between the most prominent private sector enterprises and the private universities is also restrictive, and represents another comparative disadvantage between public and private higher education institutions.