Simply: yes
The only ones who are making real money with mining are the company's that produc mining equipment.
They first use it to mine themselves and when the return starts to slow down, they ship it to their customers. That's why all the pre-orders on the latest mining equipment exits.
This makes sense. The people who got rich in the 1849 gold rush were the companies who produced the equipment to mine the gold.
I bought the USB miner just on a lark to just chug away and see what kind of return I got. A 1 THash miner would probably give me about 100% ROI if it can last for a few months. But as more and more miners come online, the rewards are going to decrease rapidly. And come next halving day, I sincerely doubt that transaction fees will increase sufficiently to make up for the 12.5BTC drop per block.