> And it would have been relatively easy to put up a notice that said "your DNS server seems to be dropping all EDNS0 data or whatever stupid thing it's doing;

> And it would have been relatively easy to put up a notice that said "your DNS server seems to be dropping all EDNS0 data or whatever stupid thing it's doing; would you like to switch servers"? Which would have avoided centralizing everybody by default. Would you really expect ordinary users to understand that and respond appropriately?