No retail business is going to give up their precious parking spaces to bike lockers. They won't cater to cyclists unless they SEE cyclists and the demand is there. Chicken and egg. For a business to create better bike parking they need to see cyclists in large numbers AT their business FIRST.

It IS great they have bike lockers at Denver park and rides where like autos theft and vandalism is more prone to happen - and has happened. Even if a business HAS a bike rack I often prefer signposts instead - reason being those posts are right in front of the door where people are coming and going. Not on the side of the building next to the dumpster. No one is going to F with my locked bike knowing I could walk out the door at any second.

My setup is:

Bike
Rack Trunk - which I have a strap for and can take into stores OR
Messenger Bag.
Detachable front light. Click and its off.

I'm not careless about my bike. I secure it every time and when I go to a movie or a long dinner I lock use two good u-locks and always lock the front wheel. But to this day I have yet to even have my bungie cord stolen off the back.

Anyway I wouldn't wait around for bike lockers and valet parking to start springing up all over town. But the more people that park their bikes in front of stores, shops, and restaurants means management will see them, and cater to them. And I'd prefer a row of solid upside down U bike posts over a bank of lockers. I don't care to fiddle with keys and doors just to go in and get eggs. And in downtown areas it would just result in homeless people sleeping in them.