The value is that many companies like building MCP servers much more than CLIs. For whatever reason.

Here's some companies that offer MCP servers but don't seem to offer an equally featured CLI:

   - Asana
   - Square
   - Linear
   - Dropbox 
   - Canva
   - Slack (sorta)
   - Figma (sorta)

and many more that offer both, but support their MCP more.

Should they all be offering CLI tools? IMHO, yes absolutely. But an MCP server gets much more interest. I'd rather encourage them to keep improving and supporting their MCP services than telling them to drop it for a CLI.

There's lots of things like this in technology where you end up stuck with the first thing because its popularity perpetuates itself. The QWERTY keyboard I'm typing this on is a prime example. x86 is another one.