This is a persistent misconception; all cryptocoins are generated at a static rate. The mining capacity/hashrate thrown at it has no real impact on the price of the coin, because mining hashrate has no net impact on generation rate - that is why difficulty goes up as you apply more computational power (total network hashrate).

The only thing affecting XPM price now is speculation. The only thing which will ensure longevity of its value is market support (ie. a XPM economy).

Kate.