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)
There are several fairly large bootstrappers in this space, go for it.