exactly! many people dont realize in big companies there are (relatively) very few people that matter. rest are just cogs in the machine. doesnt mean you can grow up from being a cog, but what you say is true.
B wants me badly. My skill set is very niche. B needs me to propel them forward and in a different scenario, thats a great situation to be in. But I am very hesitant of how motivated B is to transform to the next level.
Right now I work in a huge corporation. The work I do is not THAT important. I mean, it's important, but if I ever decide to leave, that will not affect the company a lot. They will find another engineer and that's it. Such model is good for business, I guess. But, it's important that every employee feel how valuable they are. Not just feel, they should exactly know, that the work they do does really-really matter to a company. This is just imho.