We've been moving away from Stripe and Stripe-backed (e.g. Shopify) payment gateways pretty much everywhere we can for this same reason. We only have a few integrations left connected to Stripe, specifically one with Tripleseat, which we use for our event management and have not migrated yet. Choosing Stripe has been the most costly decision we've ever made and we're not a small company nor a startup.
Our main bulk of transactions get processed with 4 different local payment providers (Accepta, Bank Tech, Dynamics Payments, and Evertec), one of which integrates with Authorize.net, which in turn integrates with Shopify as a custom gateway. For all of them, we were able to negotiate really good fees that are half of what we currently pay with Stripe.
My recommendation is to look into your local providers and see if any can integrate with payment APIs like Authorize.net. These providers really want your business and care enough to at least not let you go bankrupt. The bar is low!
