i think it’s about the market in south america. saw multiple comments on reddit explaining it like this: RB doesn’t care a lot about the WCC, they would obv like it, but the WDC is their main target. also makes sense, as this is the thing that is publicly most known and advertised with. RB still won the WDC and has a big market to successfully advertise in with perez in south america. they actually got what they wanted. and i kinda believe it to be the reason. i mean, they are not dumb, they know, perspective and WCC-wise, that Perez is not the option.