Best of luck to you. I don’t agree with the disparaging tone of the comments here. You executed quickly and that’s the hardest part. I wouldn’t bet against you, as long as you can keep iterating at the same pace that got you over the initial hurdles.
Your funding gives you the competitive advantage of “elbow grease,” which is significant when tackling problems like N-M ETL pipelines. But don’t get stuck focusing on solving every new corner case of these problems. Look for opportunities to be nimble, and cast a wide net so you can find them.