Search around on the forum. There is a lot of serious dislike. While I’m sure you’d choose a wax that’s not a PIA for customers, a lot of us have had to deal with really difficult wax. Enough that’s it’s a strong negative in making a buying decision. For novices who haven’t dealt with wax, it’s intimidating. That’s a couple segments of potential customers you’d be deterring sales with. After that, comes the opening decision. I see this all the time, when there are multiple bottles to choose from, waxed bottles don’t get opened, unless it’s a really compelling producer. (And, again, some of them use awful wax, which just reinforces negative sentiments.)
A couple wineries I work with use wax on magnums, but that’s like up to 24 bottles. I don’t know any winemakers who like the idea of dealing with wax beyond that. Some of them have done it, then abandoned the practice.
Again, don’t think of capsules as the alternative. As someone who has bottled for dozens (50?) of labels, they are a constant problem. They are so delicate. Despite the massive amount of packaging to protect them, a warehouse worker can toss a box around fairly normally, compacting them together very slightly, which is enough that they stick together just enough that they won’t work in a dispenser and have to be put on manually. A slight change, with the same specs, for the capsules or bottles, can mean they don’t go on well or at all. Imagine having to watch for and pull a certain percent from the line, cut off the capsule and put those back on the line. Oh, that safe amount of extra you felt safe with is gone, and you have several cases with no capsules, despite all those you let through with a somewhat acceptable level of creasing. The mobile line I worked with most recently (and a few times before) didn’t even bother getting a dispenser. That meant Lucy and Ethel spent 8 hours maxed out on a fast line manually putting on capsules.
My recommendation is a nicely branded cork as part of the packaging design. It can look very clean, elegant, natural. Check producers like Halcon, Big Basin, Ghostwriter, Harrington, Broc, Edmunds St. John, Wind Gap, Cellars 33 and many more. (Some may choose to capsule a higher tier of wines.)