might not be the case on Visa/Master, as there are Chinese payment, instant payment service and buy now pay later scheme, don't see the potential. No comment on pharma; there could be some truth in the GM case, for sure BRK is a good investment, just too pricey for one stock.
5 Warren Buffett Stocks to Buy Hand Over Fist for the Fourth Quarter
didn't know that, TSMC, SAMS and INTL stole all the limelight. there are players fitting all along the technology spectrum, STM still producing 5" & 6" wafers, they have their own market.