No, coax loses signal at longer distance too, it's just more resistant to noise (thanks to shield) so it can run little longer with more bandwidth. But I had a real world experience, where just putting too many feet in house with coax inside my house made my cable modem not picking/sending up enough signal. So instead I used shorter coax cable and longer UTP Ethernet to my router.
yeah it was very long cable which my family that watched tv used it to connect to set up box and hid behind counter. I used two-way spliter and another standard long cable from comcast kit box (that can go through the whole living room). But that very first long cable could run through multiple rooms.