PPP metric might be somewhat useful to estimate purchasing power of given country citizens in their everyday life but it is useless when talking about economy s

PPP metric might be somewhat useful to estimate purchasing power of given country citizens in their everyday life but it is useless when talking about economy size. In the context of this thread for example the reason US has so bargaining power is that access to its market is very lucrative. India might be at 18.9 and US 32.4 in PPP but access to US market is worth around 10x more - that's the nominal GDP difference in action.