I totally can provide as much info as you'd like about it but would probably be better off forum. Shoot me an email xzel at protonmail.com . Still going to add a bit here but like I said there are so many companies that exist in slightly different niches in this massive space it would be a small novel.
Generally the people who buy licenses for these products are either people who want to make their own website with WP and stumbled upon the website builder tools or, more significantly, agencies or single person companies who are making a lot of websites for small businesses. Lots of restaurant, small businesses, etc need simple websites that look good, have the info there they need, are editable without blowing up and don't want to spend a lot of money. So they will pay 400-1000 dollars to their web dev who buys a website builder license with part of it. He will know the ins and outs of the tool (like my photoshop comparison earlier) and can whip up pretty unique but "gets the job done" website on the cheap with the tooling that provides a huge amount of short cuts. Basically these tools allow beginner / non-super technical designers or web devs to short cut most of the coding, as I said before. Someone like Elementor, probably the biggest company in the space, is used by a huge number of people and businesses big and small.
On the hosting front, there are a lot of good and cheap hosting options these days. Self hosting is so much better than its ever been as PHP security and in general VPS security is a lot better that it was in the past. I don't want to recommend someone specific for paid for hosting because we may have contracts with hosting partners and like the previous post these opinions are my own and I like to keep my HN posting separate from my business but I'm more than happy to talk about that via email as well. Wowzers that was a run on sentence. Hope this helps!