Bubble is perfect for so many applications but not a static funnel (?) site intended to get someone to purchase a product. In my opinion, everything i saw could be created with a builder like Dorik (my preferred nocode site builder) and then from the point of logon forward, you could use bubble to support the actual ‘app’ part of the domain.
i see most domains like this as 2 part
the front facing web site
the web app that does all the cool stuff and requires you to be logged in
a front facing site should be built and hosted on a CDN across the world to ensure the lowest possible load time. then the app could be another entity hosted on bubbles slowwed down servers. a well constructed app could load in only a few seconds depending on the setup and number of plugins being used