There is a difficult-to-kill wish that Mars was once "Earthlike", but it's apparent that it has never had much atmosphere. Venus must get hit very hard by the solar wind -- the atmosphere must have been even more massive than it is now, unless of course Venus migrated into its current orbit, which isn't terribly unlikely, given its lack of tidal lock with the Sun (Venus has a slow retrograde axial rotation).
“The Solar Wind, came blowin’ in, from across the Sun...”