Yup and the reason no one markets something like "tail the logs for server X" is because, if you're talking in the context of an individual server, you're too small for anyone to care about.
I've got logs from hundreds of servers that I use standard tools to look at, and that's a small system. Centralising logs has been a thing for decades.
Which is fine, I'm just saying you're not the target market for the big observability vendors.
The current generation of observability tools is built for distributed systems that are basically too complex to reason about, and so you have other ways of monitoring and debugging them. When you have 10's of k's of ephemeral containers running hundreds of services, you can't just look at some logs for a server to understand what's going on (ignoring the fact that servers aren't even a primitive in this system).
10's of GBs of logs a day just doesn't move the needle on pricing. They want the customers that are going to generate 7 figures in revenue and those customers aren't talking about aggregating logs from a few hundred servers.