Apple's business is squarely with the frontend of computing: The desktops, laptops, phones, tablets, and even watches that your mom and pop, artists, designers, and engineers use in daily life.
I don't see what Apple stands to gain from getting into the enterprise market, other than simple diversification of their portfolio.
Apple explicitly failed in the enterprise space because they didn't care. They built a very well-decorated walled-garden, but it's not what enterprise customers wanted. Apple wanted to sell UNIX, the customers wanted to buy servers. When the dust settled, Apple made no attempt to respond to customer demands. They smothered the product with a pillow and told their enterprise partners to pound sand or buy a Trash Can Mac.
I don't see what Apple stands to gain from getting into the enterprise market, other than simple diversification of their portfolio.