With $191.367.051.980 in capitalization, is impossible to pump (or dump) artificially Bitcoin. Maybe when price was 50 time less than now, some little pump was possible too. But not now, now with this market volume

i wouldn't use the words "pump and dump" but i have to say it is not impossible to
manipulate the bitcoin market. we have seen multiple examples of it already. have you forgotten the Jaime Dimon "bitcoin is fraud" thing?
of course it is getting harder and harder to manipulate the market as it grows. but it will never make it impossible to manipulate the market, just like any other market!