I urge you NOT to get discouraged, and to chat with non-technical online small business builders: you'd find many who market primarily on Instagram, who are just figuring out how to get a nice website for their brand.
I see a lot of value if you position your service as a way for them to offer a tiered loyalty program for their customers: i.e. "log-in via loginland, buy on our site and rack up points that you can redeem later!".
Not sure what the integration would look like with their existing website builder stack, but could be fruitful to look into this.
Also, there are MANY brands looking to spin up their first online store for their brand - may even make sense to offer a very basic product listing that lets them sell products and manage loyalty programs easily with their customers.
Just a few suggestions that stemmed from recent conversations with founders of these kinds of small scale Insta-marketed brands.