Why do we cheer for regions and not for teams?

I came from CS:GO community and people there used to hate their rivals. A C9 fan hates Liquid and vice-versa. Furia and Imperial hate each other. Navi, G2, Mouz, Faze, Ence. No one cheer for their rivals against other regions. We can say the same in football... Why people here cheer for regions?

well if your favorite team gets eliminated is logic to cheer for your region i guess

because in CS it's just eu dominant so it essentially will break down into what teams you like. in valorant, it's more internationally competitive

riot makes it seem international and region based, with all the na gets these many slots and emea gets this many slots and sea gets this many slots. csgo has multiple teams from a country, and many teams are from eu. cs tournament organizers don't split the regions into groups, and if they do, its only for a major. but by the point you get to the major, you have a set of teams you like, in an order

We are all tribal and prideful, irrational yes, but it is what it is

People dislike to not be represented. When our team loses, we have to support another team near to ours. We can't stand being losers

Even in CS, there was a huge divide in regions. NA was mocked for years on CS. Br was mocked aswell. Esports has this weird desire for region vs region, as has been common in pretty much every esport scene. Siege had it, CS had it, Val has it, league, dota, etc. They all have it.

I'm not sure why it's a thing, considering other sports tend to go towards city/town based teams, in which they grew up around. HOwever that never stopped people being fans of other nations teams. Supporting ones nation in an event like a world cup, I understand. Having to feel like you have to blindly support a whole region, just to better than another, I dont fully understand. The memes and banter of region vs region can be hilarious at times. It's when some people base their whole personality around EU> this region, or NA > that region, etc.

CS it might not be as obvious as it's always been EU on top, besides the BR era of sk/lg. Even then, it was a single team that was insane at the time. Right now NA has one team in CS that is actually decent, and BR has one, potentially 2 if 00N can actually win a bo3 against an eu team.
That's why CS might appear to not have region vs region loyalty, but it does. It's just been around that inside those regions, you have rivalries.

Just look anywhere when it's an EU team vs NA/BR. EU fans flock to support the EU team playing, and NA support the NA team playing. Just not there's no real rivalries in NA, as it's a 1 team region.

Im 100% sure the tendencies came from cs and cs players. Just look at the tweet from angel that was brought uo recently, or check shroud’s watchparties in iceland 2021 and take a shot every time he says “why so quiet eu”. Regional rivalries might not be significant now in cs but they definitely were