Which tools are most cost friendly for large quantities of users

I'm a PBI and Tableau guy through and through, but not infrequently someone rings me up and wants a tool for like 3,000 named users and doesn't have the budget for either of the big tools' per person licensing or embedded/core models. Example from today is a saas company supportig1,200 users (as a start) viewing reports between 3 to 18 times/user/month currently charging their clients $3/per user! Obviously they can't up that to cover the cost of reporting with Tableau and PBI or even Looker's pricing models. So back to do my own research on the side but wondering if anyone has experience with