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小 發表於 2015-2-11 11:12 PM (第 3334 天)
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以上三個都係lateral
related business but not competitive
不過如果有時如果兩隻關係唔係咁接近 有d年份會接受lateral/conglomerate兩種都得
the content of newspaper係咪public good
yes, non-excludable and non-rival in consumption
non-excludable: it is costly to exclude non-payers from accessing the news content
non-rival: one's consumption of the news content doesn't affect others' availability of consumption