Again, I'd swear every TV sold in my part of Europe supported 60hz displays. Most didn't support NTSC which meant you had to be careful if you wanted to output import stuff (games or videos) over SVideo or composite. I remember being in the market for a TV in 94 or 95 and every TV supported 60 but very few supported NTSC and that usually came at a premium.
The NTSC color-coding part was mostly a non issue though because most devices could output RGB over SCART which totally bypassed any color coding format questions. I mostly remember people who thought they were outputting RGB over scart but were really outputting composite (usually because they'd been sold a composite cable) which resulted in a black and white picture.
Anyway, it seems really fair to assume that in 2013, every display in PAL land can take 60hz. Nintendo actually made that assumption years ago when they released Metroid Prime 2, which didn't support 50hz.
Yeah, in the PS1 era days, it would be a strange situation to find yourself with a TV that didn't support 60hz, anything different would be an anomaly, certainly I never felt compelled to check when I bought a new TV, it was just the norm to have 60hz support, particularly during the PS1 era. The only quirk was that you'd have one main scart channel and that would be the one that would support NTSC, and you'd have to hook it up with an RGB scart cable; anything else and it would output the picture in black and white, if memory serves me correctly.
The argument that in keeping the PAL 50hz originals, that it would be an authentic experience, doesn't hold water because it's largely an inferior experience, it's just that back then we were ill-informed and didn't know any better, and those that did know better, it was basically tough luck unless you decided to import or mod your console; something of a rarity in the Megadrive/SNES days, but less of a problem in the PS1/2 era when modding was particularly widespread in pockets of enthusiast communities. It's 2012 and the consumer is much better informed and we should, at the very least, have the option to play either version of the game. Most of the time it requires a simple patch for the PAL rom, I know that when I had my PAL version of Final Fantasy VII, I remember using a Gameshark code to play it in NTSC and it worked without any glitches.