Well, one way is to
write a report on it and charge $1,000 a throw for the report
"Open Source software is raising havoc throughout the software market. It is the ultimate in disruptive technology, and while to it is only 6% of estimated trillion dollars IT budgeted annually, it represents a real loss of $60 billion in annual revenues to software companies," said Jim Johnson, Chairman, The Standish Group International"
I'd have been more comfortable with a range of values though......I can't believe that at this stage this isn't a hugely SWAG game
Thanks for link to
Simon Wardley