Why does the industry change the website?
Because the thing the site has to produce is different. For a trade it is a phone call or a booked job, for a manufacturer a quote request with part numbers, for a clinic an appointment in your practice software, for a restaurant a table or an order. Each of those needs its own form, its own connection to the system you already run and its own kind of proof. A site designed around the right outcome is shorter, clearer and easier to keep up than one that tries to say everything.