Why the MIT license?

Hi guys,
I was asking myself why IPFS is using the MIT license instead of GNU GPL.
Online I also only found no source code about the protocol or about the binary of the software package.
IPFS has maybe a company?

Could please anyone answer to these questions?
Thanks in advice.

There are multiple IPFS implementations that may have different licenses.

If you’re thinking about why implementations like kubo have chosen an MIT/Apache-2.0 dual license approach (kubo/LICENSE at master · ipfs/kubo · GitHub) then I’d take a look at Introducing the Permissive License Stack | Protocol Labs.