Satoshis as usable currency

Hi, I was wondering... as the bitcoin price rose and got to very high prices since it was created (even now, 16800 is a lot for anyone wanting 1 btc), and imagine we end up using bitcoin for everyday life products, how will it impact the economy?

I mean, we will have to use fractions of bitcoin right? So actually someone owning 1 bitcoin will be rich? Or will the economy adapt and change prices? (The latter wouldn't really make sense to me tho)

Thanks for your answers :)