In Vegas in 2021, I was surprised to see double or even (rarely) single 0 roulette tables mostly empty, right next to full triple-0 tables with the same min bet

In Vegas in 2021, I was surprised to see double or even (rarely) single 0 roulette tables mostly empty, right next to full triple-0 tables with the same min bet. Players seemed to understand the game too, so I guess the better table had just opened up and they didn't feel like moving.