This might be a stupid newbie question, but I really wonder reading that folks use cheap "commodity" hardware for satellites like mentioned here, like boards MSP430F5529 or STM32F407 but for sure there are many others as well.

Looking on the vendor sites [2,3] I cannot find anything featuring robustness of specifically these two boards with regard to radiation, high energy particles, high temperature, vibration, pressure.. So do these factor impose far less risks (there would be figures?..) than guys like Boeing, Lockheed Martin & Co. would probably advocate for their less cheap but well-tested "space hardware", or are many early stage small-scale experimentations just not thought to be sustainable at early stages because the business model/strategy take this into account anyway?.. Or I just miss the point?

Looking forward to learn the objective truth in this context.

[1] Does anybody work on a "spacecraft linux"?

[2] http://www.ti.com/product/MSP430F5529/datasheet

[3] http://www.st.com/en/microcontrollers/stm32f407-417.html?querycriteria=productId=LN11