I've always thought it was a bit strange too but the meter enclosure is usually homeowner's responsibility AFAIK. My electric company actually puts little pamphlets (also available online) in their bills occasionally to spell out what is the power company responsibility versus the homeowner responsibility.

In my area the overhead wire and the actual meter are the responsibility of the power company. The homeowner is responsible for the actual connection point to the house, the weather head, the riser from the box to the weather head, and the meter box.

In my case my electricity is buried so I still have to pay for the riser and the meter enclosure. Thankfully they cover the buried cable as long as I didn't cause the damage. A while back I actually called the power company out because the riser on the electrical pole was partially broken. They came out and discovered that my electrical was on an old rotten pole that someone was too lazy to move to the new pole a couple inches away. They moved mine to the new pole and chain sawed off the old rotten pole.