Damage to Comcast's lines is already covered by applicable law. This is not made explicit in this new ordinance, but because the ordinance requires the attacher to both post a bond, and to indemnify (protect from legal repercussions for damages) the pole owner, it's clearly something obvious to the lawyers who wrote it.
This law also requires notification be sent to anyone whose lines are moved, and places liability for certain costs on the one doing the moving - cost for the existing user to perform inspections, and cover the costs for any mistakes made that bring it out of spec with the pole owner. And the pole owners may require approval of the contractors who actually perform the work.
Also, the law does require that the new line owner gets permission from the pole owner, and that any work that could reasonably cause a service outage must notify the existing line owners, and must coordinate with them if they choose to do so (within a certain timeframe - if Comcast sits around for a month after being told of outage-causing work, the work may proceed without them).