Actually, the Netscape page is just a thin veneer over the CompuServe page. If you take the green gifs off, the page is filled with CompuServe colors. It's less a template and more Netscape wearing the skin of CompuServe turned green.
I prefer to think there's some developer out there who wrote wonderful code to made that "Homepage" performant and easy to maintain, and has successfully argued for their continued existence, occasionally pushing out a small feature addition to feed in data from new sources as old sources go.
Oath/Verizon is keeping these sites on some kind of life support to this day.