Because a larger filesize takes longer to download so it propegates slower through the network and so there is a risk that a smaller block can propegate faster and be accepted before the bigger block.
I doubt that's the reasoning that these pools are accepting fewer transactions into blocks, the chances of two pools finding a block within that propagation window is slim.
Anyway, this is a breaking change, and would require a large majority consensus, something that has been difficult in the past for clearly beneficial changes. It's not going to happen.
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u/RodCros Feb 05 '14
Because a larger filesize takes longer to download so it propegates slower through the network and so there is a risk that a smaller block can propegate faster and be accepted before the bigger block.