Well, "how high is up?"
"Long life" is a meaningless, non-quantitative phrase.
You may find a quantitative "life" statement on the
packaging but this is a statistical / legal thing, a
cost benefit marketing call (who saves the packaging
so as to be able to attempt getting a refund three
years from now on the "10 year" bulb?). You can bet
that the service life is oversold to know-nothing
consumers and even procurement people, who do
not dive deeper than the datasheet front tables.
I have a lot of 20+ year old equipment chock full
of electrolytic capacitors. And a lot more scrap
likewise. Who's to say, what generalized electrolytic
capacitor product lifetime effect is? It comes down
to the seal and the stress. Of course a solid state
(ceramic) capacitor is going to be more reliable to
temperature (but less so, to board flex - every
component has its weaknesses, what are the threats?).
Of course there's the small matter that you cannot,
for any money, have a ceramic 100uF 400V capacitor
that fits in a standard lamp base. So the unit with
the electrolytic, if that capacitance is necessary,
will certainly have a longer life than a stillborn design
with an unfillable BOM.