It's definitely possible to compete given a certain site builder was shared on Hacker News about a week or so ago, and given how many others I've seen posted here, but it's going to be a tough market for sure. You're competing with services with huge marketing budgets and a lot of name recognition, often for an audience that isn't very good at researching solutions.
The feedback I keep seeing on hn and elsewhere is a mix of ease/ownership/flexibility but still abstraction of coding and hosting that most people might not want to do. It’s a super broad space and lots of people want different things in a solution.
Advice: go after a narrow niche since the space is crowded, competitive, and arguably commoditized.
Here’s an example I saw launch recently and thought “that’s an interesting niche” https://sprout.site/en/ (No affiliation)
I was ready to look for problems but couldn't find much, impressive lean and fast landing page. If it is generated by the tool, great work.
There are several fairly large bootstrappers in this space, go for it.