Ray Walker brought up an interesting twist on the evolution of craft beer and preferences in the UK and USA. An English colleague of mine back in the 90's used to tell me stories of drinking scrumpy, hard cider, and how intoxicating it was. In the USA too there is a demand for the hard ciders and such, which originated in the UK. Nowadays many of those craft brewers are beyond being called microbreweries and have found a steadily growing niche for their products, at the expense of the big 3 brewers (Anheuser-Busch, Miller-Coors, and Pabst. This is how a list of the top 50 brewers in the USA looks now. Note the abundance of craft brewers, virtually non existent 20 years ago.
Top 50 Breweries by Volume
2. MillerCoors Chicago IL
3. Pabst Brewing Co. Woodbridge IL
4. D. G. Yuengling and Son Pottsville PA (America's Oldest Brewery -1828)
5. Boston Beer Co. Boston MA (Sam Adams)
6. North American Breweries Rochester NY
7. Sierra Nevada Brewing Co. Chico CA (Classic american pale ale and a pioneer - 1980)
8. New Belgium Brewing Co. Fort Collins CO
9. Craft Brewers Alliance Portland OR
10. The Gambrinus Company San Antonio TX11. Deschutes Brewery Bend OR
12. Matt Brewing Co. Utica NY (Saranac, and contract brewing for craft brewers)
13. Bell's Brewery, Inc. Galesburg MI
14. Minhas Craft Brewery Monroe WI
15. Harpoon Brewery Boston MA (a pioneer craft brewery - 1986)
16. Lagunitas Brewing Co. Petaluma CA
17. Boulevard Brewing Co. Kansas City MO
18. Stone Brewing Co. Escondido CA
19. Dogfish Head Craft Brewery Milton DE
20. Brooklyn Brewery Brooklyn NY (pioneer -1987)
21. Alaskan Brewing Juneau AK
22. Long Trail Brewing Co. Burlington VT
23. August Schell Brewing New Ulm MN
24. Shipyard Brewing Co. Portland ME
25. Abita Brewing Co. Abita Springs LA
26. World Brews/Winery Exchange Novato CA
27. Great Lakes Brewing Co. Cleveland OH
28. New Glarus Brewing Co. New Glarus WI
29. Full Sail Brewing Co. Hood River OR
30. Pittsburgh Brewing Co. Pittsburgh PA (Iron City)
31. Summit Brewing Co. St. Paul MN
32. Anchor Brewing Co. San Francisco CA (The saved by Fritz Maytag in 1965 and the first craft brewer in USA)
33. Firestone Walker Brewing Co. Paso Robles CA
34. Cold Spring Brewing Co. Cold Spring MN
35. Sweetwater Brewing Co. Atlanta GA
36. Rogue Ales Brewery Newport OR
37. Mendocino Brewing Ukiah CA
38. Flying Dog Brewery Frederick MD
39. Victory Brewing Co. Downingtown PA
40. CraftWorks Breweries & Restaurants Chattanooga/Louisville TN/CO
41. Oskar Blues Brewery Longmont CO
42. Odell Brewing Co. Fort Collins CO
43. Stevens Point Brewery Stevens Point WI
44. Ninkasi Brewing Co. Eugene OR
45. BJ's Chicago Pizza & Brewery Huntington Beach CA
46. Blue Point Brewing Co. Patchogue NY
47. Bear Republic Brewing Cloverdale CA
48. Goose Island Brewing Chicago IL
49. Lost Coast Brewery Eureka CA
50. Narragansett Brewing Providence RI