I would like to see actual good warranties where the companies stand behind their products and don't send you back damaged cameras with $600 "repairs".
Warranties are generally not decided by the head office (in our niche anyway, in this case Canon Inc). They are a cost assumed by the specific global subsidiary. However, a lot of those subsidiaries will hammer them down to 1 year or whatever the law in that jurisdiction requires, 2 years in most (maybe all) of Europe? 1 year in the US or Canada and so on.
Canon, technically doesn't have an international warranty. However, allowances will be made.
Sigma for example has a 7 year warranty in Canada, but a 4 year warranty in the USA (last I checked anyway). Sigma warranty in Canada is handled by the distributor (Gentec), not Sigma themselves.
Canon will internationally repair (AFAIK) for a fee, though there are different experiences when it comes to know grey market products. However, that's not the case across all industries or companies. One example, I could not get a Samsung phone repaired in the EU by Samsung, as it had originated in Canada. I couldn't even pay for it. It was just a screen, not any of the innards that may be different due to regulations.
They have also discovered "CarePak" is a money making machine, as it adds margin for the retailer and the Canon subsidiary accountants are happy. Extended warranties as a whole have something like a 10% redemption rate, don't directly quote me, but it's some absurd number. It's free money.
Honestly, if we want better warranties, that is going to have to be legislated by a government body. If it happens, sadly... you know who will end up paying for it.
The changes (sometimes entitlement?) in customer attitude may have also played some role in evolving warranty policies in the wrong direction.