What power is there to grab and who is the current holder of such power?

Or are you full of shit?

Control over 10 billion dollars is a pretty good power, that many wishes to have, but its best if nobody has it.

The stagnation in bitcoin transaction growth is clear evidence the power has been grabbed long ago...

Segwit is coming to rescue the day, it will probably be here before the end of the year.

I heard it will only be activated when 95% of the miners agree. So it might never be activated in the future.