This is only partly true. And context matters a lot too.
For one, pollination causes better seed production. So better pollination, means more flowering plants, so more food for insects next season.
It's studied (I cannot find the paper, it was a German study, that's all I remember) where a very "poor" area (farmland and production-forests reclaimed as diverse nature) did had much more insects, much faster, on the side where honeybees were kept, than on the side where they weren't, due to the honeybees "creating" flowering plants for other insects to eat from too.
But I've also read a study from the Netherlands which is now often used by nature-management to ban honeybee-colonies from nature areas due to them competing against more endangered insects in those areas.
For one, pollination causes better seed production. So better pollination, means more flowering plants, so more food for insects next season.
It's studied (I cannot find the paper, it was a German study, that's all I remember) where a very "poor" area (farmland and production-forests reclaimed as diverse nature) did had much more insects, much faster, on the side where honeybees were kept, than on the side where they weren't, due to the honeybees "creating" flowering plants for other insects to eat from too.
But I've also read a study from the Netherlands which is now often used by nature-management to ban honeybee-colonies from nature areas due to them competing against more endangered insects in those areas.
It's nature. It depends.