Not always and not everywhere. I lived in Beijing for 9 years on a subway line (well, after line 10 opened) that would have taken me almost straight to work, but it was so packed I still took a taxi. Maybe the extra lines/capacity makes it more comfortable now, but it wasn’t Tokyo when I was living there.

Beijing: “I could take the train but the public transit is so useful and frequent that it’s crowded so I took a taxi :’(“

My medium sized American city: “what train? What bus? What taxi?