The main barrier to implementing a new methodology for using COTS in space applications is Resistance to Change. Overcoming barriers and debunking well rooted myths, instead of resisting a change, are the way to a proper practical solution to meet present and future requirements. The present space official policies are still penalising the use of COTS, referring to them as “last resort”. The market share of the military/space grade components has decreased to less than 0.3% (in $), questioning the components availability. The only thing certain about the availability security of the military/space EEE components is uncertainty.