nowhere. Manufacturers aren't interested in longterm performance but rapid
obsolescence.
Cameras and their release cycles are designed around the cameras being
replaced every other year (roughly) as soon as a new model hits the
market.
The marketing campaigns are created to impress on potential customers the
fact that any model older than the current production model is utterly
useless and cannot produce a halfway decent image under any conditions.
As a result a large pro****tion of the customerbase indeed replaces their
cameras every few years (people are gullible herd animals, most of them)
and
often don't bother to try to sell the old equipment because the resale
value
is minimal.
Instead they keep it around for a while as a backup (just in case) and
then
dump it in the trash, even though it's still in perfect working order and
capable of producing results of the same quality as what they did when
brand
new 2 years earlier (and likely not visibly worse than their new
equipment).
In such an environment it's not in the interest of camera manufacturers to
encourage such endurance tests as you are looking for.
And as all or most publications depend heavily on advertising revenue
provided by those manufacturers it's not in their interest to publish such
tests either.
