...what are the major other factors that pump capital into btc ?
I can't support it with hard numbers, but this is the Speculation Forum. In order, I'd go with:
Speculation/Investment
Gambling/Drugs (Tied 2-3)
Capital Confiscation Evasion (Taxes/Borders/Estate/Money Transfer)
Product purchase/payment (Hard/Soft)
Donations/Tipping
In six months to a year I think that will change markedly, to:
Speculation/Investment
Capital Confiscation Evasion (Taxes/Borders/Estate/Money Transfer)
Gambling
Donations/Tipping & Product purchase/payment (Tied)
Drugs
In two to three years Capital Confiscation Evasion and Gambling will be tied for first, by a
wide margin.
n.b., Note that I conflate taxes of all sorts and private/banking money transfer fees under the heading of Capital Confiscation.