That's a little bit tautological and a little bit misleading; tautological because widely-known beers have nationwide production and distribution and so of course they're produced by big companies, and misleading because unlike unlike self-care products like Axe and Dove, the different beer "brands" owned by major brewing firms tend to be run out of different breweries with different practices; they're different products, just with shared financing.

And, obviously, within any one local market, there will be far more better-known regional brands, often not owned by any big corporation.