It doesn't matter if it's just one company. It's just one grain of sand in a barrel of oats. If it's all companies or most companies, it's more like the barrel of oats is half sand. This is hard on the teeth. The symptom would be overall decreased efficiency and decreased productivity with a tilt to inflation.
Some people argue that any commerce is good.
This just isn't so. If you pay someone to dig a hole and fill it up and they pay you to move some bricks upstairs and down, this is not productive. If you pay someone to build a house and they pay you to make a movie, this is productive. In both examples, perhaps the same sum of money was exchanged and the exchange was a closed loop but the difference is that at the end, there is a concrete result. Company B passes large quantities of data around internally.