why does thunderbird can't sync rss feed

I'm really interested in mozilla softwares and i use thunderbird for rss reading, but i want to sync my rss reading between my ubuntu and my windows. i found an old forum post about it: https://superuser.com/questions/387848/sync-rss-feeds-on-multiple-thunderbird-installations-and-iphone i wonder if there is possibility to add syncing feature to thunderbird. i think that it isn't hard to work out for a great company like mozilla :) with special thanks