Philadelphia Inquirer: Comcast — content to sell cable-TV or high-speed Internet to homeowners and small businesses for years — is now targeting Vanguard, Apple, Amazon, General Motors, Coca-Cola, and other big companies for data-transmission services. Seeking new growth after the Time Warner Cable smackdown this spring, Comcast will challenge AT&T and Verizon in their lucrative businesses serving the telecom needs of Fortune 500 companies with hundreds or thousands of nationwide locations.