@HenriThunberg I've generally found that the US vegan community is pretty good at mapping out what's available where.

As far as rural locations are concerned, my guess is that the most likely solution is a chain using an already existing vegan crust and sauce with frozen Diaya cheese (or similar), so there doesn't need to be much in the way of added costs for a rural location -- and rural locations are also more likely to grab a big chunk of the local vegan market with any offering provided.

@Duncan Every Burger King in the country serves Impossible burgers. Dayia is available in most grocery stores in even rural areas. There's no reason to think a major national chain could not use a widely available vegan cheese brand.

@Odoacre It does need a cheese substitute, but the substitute does not need to be of a quality that it would definitely pass for 'real' cheese in a blind taste test.

@Duncan any reason you are insisting on the presence of cheese? Can I change your mind somehow? Pizza does not need to have cheese to be pizza

@Odoacre I am insisting on the presence of cheese because it was stated that the pizza needed cheese in the original description, and lots of people have placed bets under the assumption that it was required. I'm not a super supporter of the idea that pizza needs cheese, but it's a bit late to change now.

@Duncan I also think it’s in the spirit of ‘vegan pizza’ at a large national chain. You want their regular offering but vegan.

@NicoDelon Cheese is definitely the big barrier. To resolve YES, the pizza in question does not have to have any form of mock-meat.

@Duncan Yes, didn’t mean to suggest meat was part of the resolution criteria. It just goes to suggest that they might cast the net wider, beyond vegetarians and flexitarians.

@NicoDelon Yes - the Daiya pizzas are both vegan and gluten free, picking up two growing markets in one product.

@BenjiHorwell Nope - most of their locations means, broadly, if you go to a Pizza Hut you can reasonably expect to find vegan pizza, without having to Google which cities have it. However, if the exact data is available, I will resolve YES if 51% of the chain's locations in the US offer a vegan pizza.

@A I'd certainly resolve this as YES for an experiment that was in place nationwide at the resolve date, under the assumption that any new menu item is an experiment, and that the point of the experiment would be to make it permanent if the experiment was a success.

However, I hadn't considered the possibility of a chain saying "we're doing this for two weeks, then it goes away"; that seems very low-probability, since you can't get new vegan customers to stick around if you take away the vegan option.

I /think/ I should count a New Year's Special vegan pizza as a valid YES resolution, although a very unlikely edge case. I am open to thoughts on this; the spirit of the question is that I, you, or pretty much anyone else (in the USA) should be able to access the pizza in question, and if it's available for just one day, that's a pretty limited interpretation of commonly available. But at the same time, the question does specify "by the end of 2024", and New Year's Eve is a reasonable interpretation of "by the end of 2024".

However, if you simply mean the case of a vegan pizza being introduced next month, failing quickly, and no longer being available at the end of 2024, that would resolve as a NO.

@Duncan Okay thanks, so sounds like the keys definition is that it needs to be still available at the end of 2024, not just for some brief period prior to then.