A flagpole is a permanent asset to a building. A flagpole is simply a pole stuck in the ground with a way to hoist rope up to the top. But sometimes you don't always want a flagpole to be vertical. A counterbalance systems helps solve this. Some flagpole breakdowns can come a t a huge cost. For example, if the rope breaks and the flag comes down, the only way to fix the problem is to get someone up to the pulley to re-rope the flagpole. In a counterbalance system, the flagpole pulley comes to you. You will never have need for a lift device.
So maybe you are thinking, if I manage my parts right, I should never have the need to go up there. But that is not correct. At some point, the truck will fail and will need to be replaced. A counterbalance is more work initially, but over the years can pay for itself. Even a Nautical Flagpole can have a counterbalance system.