The trade nobody explains
A page builder saves the agency days of work. That saving is real — but it gets spent once, by them, and the cost gets paid every day afterwards, by you: in load time, in what the site can never do, and in the rebuild you'll need in three years.
Speed is a revenue number
Most people reach your site on a phone, on a patchy signal, while doing something else. A heavy theme loading a dozen plugins loses a chunk of them before the page has drawn.
The short version
Build it lean once, and it can grow. Build it on a template, and the template decides your ceiling.
