Both (its a unique concept) .
 You will make money when people buy it  , and make money with company profit (+ you receive interests when staking it ).

Arch Project is a company backed up by its own currency (archcoin) . After 1 year you can be shareholder in Arch company LTD . Now its funding , company financing itself by selling its currency , then investing in Moby project + myltipool + arch exchanger .....etc

All these investments will generate profit . >>> then profit will be re-invested to buy ARCH AT MARKETPRICE (means price will boost like crazy) = you are free to sell it or stake it (you already receive 4 to 20 % interests when you stake your coin = just put it on wallet and leave it opens. After 1 year your archcoins will be converted in company shares >> receive annual commercial profit . >> its a new kind of crowdfunding = UNIQUE .

you buy the currency >> you already have a return on investment in 5 to 6 years (20% yearly = just by leaving your arch on your wallet ) = these commissions are :Arch  transfer fees to maintain the network)

its like  stock options (cf: startups companies: silicon valley High tech ......) .

Stock options  has a Crazy secret : BUY HIGH , SELL HIGHER :


http://www.dailyfinance.com/2014/09/12/secret-picking-stock-winners-buy-high-sell-higher/


http://www.buy-high-sell-higher.com/


http://www.businessweek.com/stories/2008-06-20/buy-high-sell-higher-beat-the-market-businessweek-business-news-stock-market-and-financial-advice


That's what makes the difference between other currencies (no applications in real life) , ARCH has REAL APPLICATIONS in REAL LIFE = PRICE CAN ONLY GOES UP .

Ps : we keep permanently 32K Arch , as stock options Holders = so we will have insiders infos before getting public = as a reward for our holding .