No, that's why peole use ssh/https.
yes, its POSSIBLE to monitor packet level stuff IF the right kit is in place and IF you make some very obvious alterations to the hardware.
But you cant simply hook a sniffer on a ISP backbone. Its switches everywhere. You have to get to a main feed carrying ALL traffic (and that's usually optical) and insert a boxes in all traffic lines. It can be done..but its heavyweight kit.
More typically traffic monitoring is dine via invisible web proxies etc.
But they wont be intercepting e.g. ssh traffic and the like.