why exactly? is this just some form of xkcd-style "there were too many APIs so i built a superAPI" line of thinking? or is there something more fundamental about this problem you are referring to
The other reason is that Stripe Billing is stupidly good. So good in fact, that they could raise they rates from 0.5% to 1-1.5% and most people would pay up since migration would cause downtime and man-hours. I use Stripe Billing now, but could integrate with Lago once and easily switch between payment processors.