It’s no surprise.  It’s winter.
A common frustration is disabled parking spaces filled with snow.

 

What can one person do?

Point this barrier out to the manager.  Those parking spaces make it possible for customers to get into their building.  Urge them to get it cleared right away.  People with disabilities spend money – if they can get into the building.

When customers see this barrier, you can bet they will go somewhere else.  They won’t return until the snow is gone if they ever return.  It is federal law that the disabled spaces be usable.  They aren’t if they are full of snow.

Does the manager have a contract for snow plowing?  Suggest they put a penalty into the contract.  The penalty will be a charge to the plowing service for every day the disabled parking is blocked.

You don’t have democracy when any people are excluded.