But since the proprietary software has a "no benchmarking" clause, open source projects cannot respond to the whitepaper by performing their own benchmarking. They would need the permission of the proprietary vendor!
For example, here is an IBM blog post comparing the performance of IBM MQ and Apache ActiveMQ (https://webspherecompetition.wordpress.com/2015/03/12/ibm-mq...). I've tried to find a copy of the IBM MQ EULA to link, but cannot find one anywhere. But last time I reviewed it (several years ago) I believe it also had a "no benchmark" clause.
> IBM is notable for actually allowing benchmarks: > Licensee may disclose the results of any benchmark test of the Program or its subcomponents to any third party provided that …