I see your point, but I think this might work for them. At my previous place we started on Stripe it was really nice to work with, cost nothing in absolute terms because we had few sales, easy to integrate.
But a few years in we were doing substantial volume and we wanted to re-negotiate the contract. If we had Lago and could re-integrate with that, using it as leverage on a Stripe contract renewal, that could have been worth $3k a month, given that we were paying Stripe $30k per month in fees.
Our situation was a little different being retail rather than SaaS billing, but I could see a world where this makes financial sense.
But a few years in we were doing substantial volume and we wanted to re-negotiate the contract. If we had Lago and could re-integrate with that, using it as leverage on a Stripe contract renewal, that could have been worth $3k a month, given that we were paying Stripe $30k per month in fees.
Our situation was a little different being retail rather than SaaS billing, but I could see a world where this makes financial sense.