I live in a Scandinavian country. The pizza market is still to a major part small scale / family businesses and not chains. Locally owned, similar but unique in character. The burger market has more chains, but the oligopoly trends are much more visible in stores. I don't know why no pizza chain has got a stronghold. Pizza Hut exist, but I would guess it has less than 5 - 10 percent total market share. I don't think any particular chain has much more than that. But someone may prove me wrong.
Even in America the pizza chain restaurants really don’t have that much dominance. There are half a dozen mom and pop pizza parlors in every town and most of them serve a significantly better product than any of the chains. The chains are cheap though.
