Will it trigger the development and acceptance of bitcoin as a new currency and investment instrument or will it drive us more and more under the control of governments?
Although the Renaissance of Bitcoin, there wasn't anything like ETFs...IMHO, there's never been some sort of support to aid the growing process other the devaluation of some local FIAT currencies.
Buying ETF is more like owing some shares capital; it doesn't mean you've got any Bitcoins... Most investors would go for this as a monitoring tool on Bitcoin price movement and volatility.
I mean, what's the sense in over paying brokerages - a tune that's much higher than the normal 30 sat/Vbyte?