Relevant? Sonic is dead. Masterchief Collection has sold less than 2 million. Sony, again, have no identifiable star platform seller. Try and define the word relevant please.
Nintendo have collaborated with more Japanese developers than Sony has this gen, so they have indicated to the Japanese at least, they want 3rd Parties. Maybe what is most concerning to you is the lack of Western Support? Why? Do not forget it was Western 3rd Parties who pushed Microsoft to introduce anti-consumer measures like no used games in the first place.
Also, dk how old you are, but judging by the Japanese measurement alone, they can obviously keep handhelds as a market in Japan, and likely keep surviving. You know the handheld component has kept them operating for a long time, through a lot of under performing home console generations.
As for glass houses, both MS and Sony have short and long-term financial concerns that are fundamentally changing the market for Operating Systems, Mobiles, and Sony's home electronics market.
“When we make some new announcement and if there is no positive initial reaction from the market, I try to think of it as a good sign because that can be interpreted as people reacting to something groundbreaking. ...if the employees were always minding themselves to do whatever the market is requiring at any moment, and if they were always focusing on something we can sell right now for the short term, it would be very limiting. We are trying to think outside the box.” - Satoru Iwata - This is why corporate multinationals will never truly understand, or risk doing, what Nintendo does.
