Kind of. A big part of Sega's situation is that they shot their reputation in the ass with a 12 gauge in the mid 90s. They were pumping out platforms left, right and center only to discontinue them within a year or two (Sega CD, 32X, Saturn).
Nintendo have been very careful not to make the same mistakes, but even then a lot of people initially had little faith in the Switch because of the WiiU. Even Gamefreak didn't want to release Pokémon games for Switch initially.
As for other companies, their goal is to make titles that sell well on the platforms it releases on. They can afford to rely almost completely on what has come before, all they need to do is do it well.
The goal of a first party game is to sell itself and the platform. So they need to be doing things that other games aren't, in order to sell the idea of 'you can only get this experience with platform X'.