market cap is a meaningless number
i can create an alt tomorrow with 5trill coins.. get just 1 coin on an exchange and sell it to myself for $1.. and instantly my alt is market capped at $5trillion...
there are NOT $25billion fiat sitting around in bank accounts ear-marked to back the entire cryptocoin market.
anyone can make the market cap spiral up to trillions just by using small numbers.
Yes....That's an accurate observation. In cases such as the one you described, the volume of trade needs to be factored into the speculation when considering marketcap. However, wise traders pay attention to volume. If you look more closely, you will find that some of the alts have huge volumes, and according to the charts, those which do have large volumes of trade are on the top, right?