Samuelson, M., Piankov, N., &Ellman, B. (2012), Assessing the effects of most-favored nation clauses, aba section of antitrust law spring meeting 2012, Retrieved June 26, 2015. In the formulation of privileged nations clauses, “perimeter” is important – but in this context, there are two different connotations: the extent of protection of beneficiary nations and the scope of peer category or comparators that measure the protection of beneficiary nations. I will address both connotations little by little. In particular, several academic sources have noted the prevalence of LA MEISTBES clauses or similar structures in long-term energy contracts, see Crocker and Lyon (1994), Mulherin (1986), Canes and Norman (1986). The competition and markets authority`s (“CMA”) competition and markets authority (“CMA”) final report on the private auto insurance market investigation, dealing with, among other things, most-favoured-nation plans for individuals between private automobile insurance providers (“SMIs”) and price comparison sites (PCWs), it also reveals the potential of most-favoured-nation retail plans to mitigate price competition (CMA 2014). In its analysis, the CMA distinguished between the use of “strictest remuneration clauses” (the relevant PCWs do not offer better prices on its own website) and “broadest remuneration clauses” (ensuring that the price offered by an insurer in the PCW concerned is at least as good as that offered on any other PCW as well as on the insurer`s own website). Even in the case of advanced competition regulations such as the US and the EU, the number of decisions relating to earnings (traditional and retail) is relatively low, despite recent and growing attention, especially for the highest wages in the retail trade. In addition, the precedent of some of the existing cases is made more difficult by the fact that they have been resolved by obligations or approval procedures that do not lead to the formal finding of an infringement. Thus, in the case of the EU, the enforcement efforts undertaken so far with regard to the highest remuneration clauses have been abandoned without formal procedure because the relevant clauses, footnote 6, or, as in the case of e-books, have not been concluded in an undertaking decision which also does not constitute an infringement of competition law, although it is binding. Oxera (2014).