I dont think its beneficial for nintendo. there are a lot of costs to consider, not just the IP, there are initial investments and long term maintenance costs, and nintendo doesn't have to go to microsoft, some technologies used by in xbox live might not have been their own technology, purchasing usage rights are common on techno firms considering high R&D costs. and nintendo has a differentiation strategy, they'd rather avoid a competitive market by producing unique products that are not present in the market, considering the console industry requires high initial investments and requires long development time for a product to be feasible, competitors would not have enough time to copy their tech.
and most nintendo users really don't care about online gaming.







