> And the valuation/exit strategy for most SAAS offerings is quantity of users, not profitability - like it or not.

That's not true at all.

SaaS companies are valued on recurring revenue, lifetime value, retention and future cash flow. Number of users is almost irrelevant as long as those metrics are moving up and to the right to a healthy degree.

Chart.io has already changed their pricing once and I share your prediction that they will change it again: to charge even more. And grow further as a result.

SMBs are a tough market for SaaS companies with a product that has any complexity whatsoever, both in terms of usage and distribution.