The majority of European cabinets are formed by a parliamentarian coalition which usually reached a majority. The Swiss cabinet is formed by design from all the major parties, so there's no coalition needed between them - once you get enough votes you're in. It's just when the ministers are in function they cannot publicly dissent from the governing line or they fly out (it happens) - which is forcing them to negotiate behind the scenes the governing line, of course each according to their party mandate.