Thanks for the additional context... like one of the other posters mentioned, I think once your target organization has evolved beyond the capabilities of the existing products in this space, the knowledge and analytics built-in to the product become the product differentiator. Scalability is assumed. For known problems, the real value of a log analysis tool is in the knowledgebase you buy with the product and the canned reports you can get out of it; that's why there are specialized SIM/SIEM products out there. If it is an unknown problem, your customer will end up generating the knowledge base themselves anyway. Unfortunately, many of your customers may not even know what their problems are, and will expect you to sell them an "Easy button" solution...

All that said, good luck in your endeavors!