They want to meet with you because of what you said in your e-mail. So bring evidence to substantiate what you wrote.

I'm not sure what you meant by "While their offering is an enterprise product, I liked the product and cold-emailed him seeking the position".

Maybe I'm reading to much into it. But you sound despondent about the prospect about working with an enterprise product.

If that is the case, remember, a job works both ways. It's not fair on yourself or the employer to work for something you're not truly enthusiastic about.

Good luck!