Well, at least in my experience with EU projects, they tend to be much more restrictive with data sharing than equivalent US institutions: e.g. a lot of paid EUMET data has publicly available NOAA equivalents - though usually of worse quality.

It is not an EU project. It is an ESA and EUMETSAT project. Neither is an EU organisation. Both have multiple non-EU members, and I do not think all EU countries are members of either.