No one is talking about starving the bees. Someone already pointed out that bees are territorial and not great for the local insect population. You can let bees spread but there are better ways to do it. Bees do work because they think they need to, the thing is you can help them and have leftover honey that they don’t need to use. You don’t even need to limit the to one colony.
But to be fair our bees are nowhere near any urban areas nor pesticides so it might be different elsewhere.
Generally you’re not wrong but when it comes to European honey bees (which are the most common for honey production) they are presumed extinct in the wild. They need to be treated multiple times throughout the year (and it’s increasing due to climate change). Also these bees have been imported to Americas where they are not native so controlling them is very important there.