How about an answer from Nippon Chemi Con… Lifetime of Aluminum Electrolytic Capacitors | Nippon Chemi-Con Corporation The simple answer, over time all capacitors will fail. Electrolytic will also eventually leak…
Another good article: https://www.we-online.com/components/media/o173043v410%20SN008_Aluminum-Electrolytic-Polymer-Capacitors_EN.pdf
So most estimates give you 15 years…
Regards,