Raises an interesting question about whether (and where) Google might be vulnerable to local rivals.
China is the most obvious example where Google simply haven't been allowed to gather mapping data to compete, but it's interesting that there are other places where they can theoretically compete but there are significant local players.
Seznam.cz started very early (in Lycos/Alta/Yahoo era) and there's also difference in the strategy. For Google, Czech republic is just another market area, for Seznam, it's the main area.
There's also South Korea, where the local giant (Naver) has ~70% search market share. (The company is actually making a lot of money in the Asian market from games and the Line messenger, so I think their "local market first" strategy is paying off.)
Incidentally, South Korea also has probably the craziest map data regulations: no map data can leave South Korea. So, if you want to serve map data, your server must be physically in South Korea.
I think they don't have majority in Russia as well. To Yandex I think? With Seznam, it was just two years ago or so that they beat them to first place in search. In neighbouring Slovakia, Google was first long before that. Simply because there was no real competition.
China is the most obvious example where Google simply haven't been allowed to gather mapping data to compete, but it's interesting that there are other places where they can theoretically compete but there are significant local players.