I'm finding more and more breweries are making special glasses. There's more profit in them, and they're better for presenting their beer. Who'd want to drink a big barley wine in a shaker?
I have a ton of shakers but I think I only bought two and they were a dollar. Most were giveaways from bars for brewery nights, some were tour promos (everytime you go to heavy seas you get a shaker for tasting), and some were ganked from bars while drunk, but most of the glasses I bought were beer specific, like my tulips, pilsner, etc.
BTW hands down my favorite Brewery glasses (though they're expensive) are Ommegang/Duvel
LINK
Not a single shaker in the bunch. For everyday drinking, the hennepin style is far and away the best, but I love my Ommegang Chalice pour a nice triple or quad in there and you just get a whole face full of esters.