Why are there so many types of engine oil filter?

I can see why there might be a reason for 10 or 12, maybe even 20 different types to handle different flows and pressures with engines of different sizes and performance but why are there dozens and dozens of different types? Does it not just add to costs with no actual benefit?Why are there so many types of engine oil filter?
every car takes diff filter car makers have to make thing hardWhy are there so many types of engine oil filter?
Mostly this is because there are that many different types of engines (Size of oil pan, etc.) There is also the convenience. There is an entire line of filters with rubber grip base to ease filter change. While this may add to cost a bit, the addition is worth the marginal increase in that it expediates the transfer and decreases chance of spillage.
its called copyright/patent infringement. if a maker of a filter copyrights or patents that filter, nobody else can use that design so in order to get past that legal block, other makers change the design enough to make it different and still work on the same motor and do the same job. then that new design gets copyrighted and patented. hence so many different types of filters