I looked at photos of the new Purify modules, and it seems that they use capacitors from Rubycon. I guess these are assumed to be of high quality. The question then is why they use this type. Do they over-specify, or do the Purify modules require other capacitors, or does Hypex try to squeeze costs into the price of shorter life. Or is it the case that purifi knows that their new modules will be examined very carefully by demanding customers, and that for that reason they add some eye candy? I do not know, but it seems in all cases that they reasoned differently here.
The assumption being made by many here that these are all necessarily engineering decisions is not always valid. It could very well be logistics reasons. If a manufacturer is building just-in-time to fulfill orders as opposed to building inventory that will remain on shelves before being deployed, the equations could be very different.
The sourcing prices for electronic components in general vary a lot sometimes by order(s) of magnitude depending on volume, brand, etc. If a manufacturer like Hypex is using an Asian manufacturer, some of them can source certain brands much more easily than others (not necessarily correlated to quality) depending on the volumes and relationships they have and the time to market requirements and how many things they build use common components. And all of them would be much cheaper than low volume manufacturers sourcing it themselves.
Getting manufactured in Taiwan in shared factories, for example, won't lead to low labor costs as getting it done in China but their sourcing advantage would still make it worthwhile, say for a US or European manufacturer.