Commercial TVs aimed at the digital signage market are an alternative option to a large monitor, especially at larger sizes. They're less likely to spew advertising than consumer Smart TVs, but are probably less likely to stay clean than a monitor with no Internet connectivity.
I use a Linux PC as a media decode device. It works, but I have no interest in 4K (hardware video decode is sketchy on Linux, which makes 4K difficult) or paid streaming services (if I wanted to watch sewage I'd take up urban exploration into wastewater facilities).
