Actually, the study doesn't conclude bitcoin transactions will reduce 50%, it says the dollar amount of transactions will reduce up to 50%, which is a major difference.
Here's the study
http://www.juniperresearch.com/research/cryptocurrencyYou can find articles around the web with the conclusions.
The whole report with all details (82 pages) is available for a cool £1,750! And you can't even pay with
BTC!
I think I shall start a poll. Does one prefer to buy 10
BTC or buy this report?
My sincere opinion is that anyone choosing to buy the report should be lobotomized.