Quest Director Pawel Sasko got asked this on one of his recent streams, and the first portion of his answer pushes back against the idea that “all” open world games have a system like this. He brings up the upcoming Sonic open world game and Elden Ring as open world games that won’t have police chases. He cites GTA and Watch Dogs as two of the only games he can think of that have that system.
The second part of the clip that got caught off does get into an actual explanation of why they didn’t have a police chase system. Sasko says it was a combination of the technical limitations of the engine, and not enough time to make it work before release, so it was something that they eventually just gave up on, which is how we got the current system which teleports police to you, and never has gangs chase you down outside of the little clusters you can provoke on the map.
Some rumors about what Cyberpunk 2077 has planned for the future indicate that an overhaul of this system may be in the works. Though that could be a range of things, like more police/gang aggression, and it’s hard to imagine we might reach a point where we have actual car chases, a mechanic that is 100% absent in the game currently.