This is answered already with a good common sense. Bitcoin is something you buy with money. Good economy just indicating good pay for its citizen which they can be used in buying bitcoin and cryptos. I tell you that i belong to a third world country and most of the people here will just allocate their salary to the most basic needs. Investments is not part of the priority here. Most of us doesnt have the idea or at least learn the basic of investments. Only people who have the resources and money can have the opportunity to buy bitcoin.