The same wishful thinking since the N64/GameCube days. Do I trust that Nintendo will bringing the goods, of course. They've learned that equity even though it's erroded for a while.
I do see slightly better 3rd party support but this paradigm shift isn't going magically take place because they have a platform to to sowc for once.
Nintendo has pigeonholed themselves into this almost popular niche where they have been able to sustain enough in their own efforts. This is why people who buy their platforms are satisfied enough even though they are missing the massive catalogue on the opposing platforms.
It's the same reason I haven't been all in on Nintendo since SNES. I've bought every platform since but have been consistently burned by droughts and the status of them as a brand has out them in the "kiddy" category for years.
It's not an insult but the reality of the position Nintendo is in and has been in for a while has been well documented. It's OK if you love them solely but not so OK when comparing them to their main competitors on PS/XB.
I won't hold my breath for some magical comeback when they have damaged themselves and also have viable self sustained competitors like PS4/XB.
The same types of questions you ask of Nintendo aren't there for their respective adversaries and it's Nintendo who is to blame.