You have a point sir. Unfortunately, the person that will ride next to me is bigger than I am and I had groceries. We will be both uncomfortable. Normally, I would be considerate but that moment was an exception. I was thinking if I had a companion that I paid for, will I have him be substituted by a stranger passenger? I seriously don't think so.
Indeed, the tricycles can easily be re-routed. The jeepneys have cheap fuel source and can accommodate many passengers.