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The MS Stockholm (1941) had no likelihood of being commercially viable for its intended service.
However, if the MS Stockholm (1938) were completed as intended in March 1939, it would have a brief transatlantic career before and early (1939-1940) in WW2. Afterwards, it would be dedicated to cruising or internment in New York until seizure, charter or purchase by the US as a badly needed troopship since the MS Stockholm (1938) and MS Kungsholm would be the more capable Swedish-American line ocean liners for troopship purposes compared to M/S Drottingholm and M/S Gripsholm. After WW2, the MS Stockholm (1938), assuming it stayed afloat and seaworthy as of now and implying its survival in WW2 and after a collision with SS Andrea Doria or an equivalent collision with another ship, would have a career similar to its otl replacement and namesake of 1948.