You are not correct. Maxis and Celcom are wireless, which means slow and unreliable. But it also means they can be used almost anywhere in a broad coverage area without requiring specific infrastructure for each customer.

HSBB is using fibre optic cables, which is basically the same idea as the copper cable used for Streamyx ADSL except they are made of a different material which can carry a higher capacity.

You need to have the cable connected to a router on your premises. Then from the router you can use wifi locallly if you want to.