I actually submitted a ticket/request to Spectrum, with essentially the exact same question once. Surprisingly, they called me back and interviewed me about "What it would take to sign up for their service?"
When I described what I get from my local city fiber service, they acted like "price" and "reliability" and "decent customer service" were all impossible requests — as if EPB didn't exist. I'm not sure if feigned, or actual, ignorance was at play.
Regardless, I did not switch over, and they didn't lower their prices. Still get advertising, and am often left wondering "why do they even bother?!"
I do know a few elderly folks, despite also having EPBfiber (local city-supplied), maintain other services as "backup" or "for the email address they've always used from @comcast." No amount of reasoning will resolve this, so the cable internet lines still get maintained along city-provided-fiber routes.