Can I brew a beer like Budwiser, Miller, or Coors?

Yes, but...

American style lagers (very light and pale) are among the hardest styles to brew. They are so light and pale that any flaws in the brewing/fermentation process will show through in the taset and aroma. To make beers of this character requires all-grain brewing, and the use of adjuncts such as corn or rice in the mashing process. Fermentation takes place at controlled temperatures, lower than that of ales, gererally starting out around 50º F and lower throughout the lagering process (a period of cold aging "lagering" in a secondary fermenter at 40 F or below).

It is possible to brew lighter beers (Kolsch and Cream style ales, or "Steam" beers like a California Lager) with malt extract and a neutral ale yeast, especially if they are cold conditioned, but they will not be quite the same as the commercial light lagers, Usually more body and flavor than the commercial stuff (and that's a bad thing?).