Poolman
One of the worrying points of the link to the article posted by 123 was that PRM were 3rd of the leading three (according to the writer) and that there were a number of other approaches under development.
If indeed the article was 4 years old then the competition have had longer to develop and "big pharma" longer to contemplate those developments, offering them an alternative to PRM.
There is nothing illogical in NNN's complaints about no deals. He/she gets criticised as saying "there have been no deals therefore there will be no deals" (not actually what he/she says in any case, but lets's assume it is for the present). However, it is MORE logical to say "just because there has not yet been a deal, it doesn't mean there HAS to be one".
...and that's my worry!