BTC is very small in the real world! People in many countries in the world do not know BTC, there is no way to use BTC!
And BTC's impact on the real economy is limited!
Its not true. Bitcoin is not small infact many countries worldwide are now using it already. Bitcoin today is now verry famous and verry well known due its amazing features. However bitcoin do have weaknesses or disadvantages, few of them is bitcoin wont possibly work without the help of internet connection because bitcoin is a digital currency which means it needs an internet and electricity as well in order to operate the device.
There's still a small percentage around the world that uses bitcoin as far as I know. Although its growing at a astronomical rate but I don't think we even have reached like 5-10% of usage globally.
Of course there are weaknesses and this are being taken advantage of hackers, scam artist , criminals and even terrorist. That's why government is very adamant to even accept bitcoin. although it has advantage for most of us, its just sad that there are also a lot of people who exploited it to their advantage.