To have own sites is an easy way to establish a web business. It must be said that an Internet business can be done without any site at all though.
My advice is to start with blogs and no or little money expenditure. After the entrerprise growth up a website or websites can be set. They are necessary for a good business to function correctly.
I made a try with cheap hosting and a website provider and it didn't work. Thereafter I started to blog as a mad oldie man. I have published more than 150 blogs. What for ?, a very good question.