It would take at least three seeds at Comcastic upload speeds (~10Mbps) to handle a single client at 25Mbps with a small buffer. You'd need a multiple of seeds proportionate to the ratio of stream rate to buffer size. Not ever seeder will have every bit of content, or even every bit of the top 1% of content for a large corpus. Because a large portion of clients will be leechers unable to reseed (mobile, shitty residential routers, etc) the network would need a huge number of seeders with even modest popularity.
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It would take at least three seeds at Comcastic upload speeds (~10Mbps) to handle a single client at 25Mbps with a small buffer. You'd need a multiple of seeds proportionate to the ratio of stream rate to buffer size. Not ever seeder will have every bit of content, or even every bit of the top 1% of content for a large corpus. Because a large portion of clients will be leechers unable to reseed (mobile, shitty residential routers, etc) the network would need a huge number of seeders with even modest popularity.