https://desu-usergeneratedcontent.xyz/k/image/1762/53/1762535775556.jpgKeep in mind that when the M60 was developed, the soviet equivalent of it was the RPD, which fired an intermediate cartridge
No, the Soviet equivalent was the RP-46 (a belt-fed conversion of the DP), which had been in service since, as suggested by the name, 1946.
And the PK itself came out of a project that started in the early '50s, and thus was clearly not a response to the M60.
The M60 was also not at all intended as a squad weapon originally, but as a crew-served platoon-level GPMG - distribution of it to rifle squads was a later improvisation due to the combination of the BAR being retired and the lack of an RPK equivalent for the M16 (or at least the US deciding not to buy one, technically Colt did offer such a variant) leaving US squads without any real machine gun capability. But the M60 was obviously not exactly the best suited for that role - while light by GPMG standards, it's still too heavy as a SAW - and this directly led to the search for a proper squad machine gun that eventually led to the M249.
The concept of the machine gun team became obsolete after WW2 and the military was much more interested in the squad automatic weapon concept
Uh, what? Maybe I've misunderstood what you mean by "machine gun team", but crew-served machine guns were very much still relevant after the war - as described above, that was what the M60 was originally intended as rather than being a SAW, and there's also the FN MAG, the French AA-52, obviously continued use of the MG42 in its post-war evolutions, etc.
