A website can be a great tool for your business. Let me give you an example. I have a client that has hundreds of students in his classes. Then Covid-19 hit.
Suddenly he had to cancel class, get the notice out to his students, explain what was happening, and start signing up his members for new classes; with limits on how many were allowed sign up for each class. After making some adjustments to the site it was possible for him to do all the above via his website, which saved him a ton of extra work.