Beolab 90 end of life - repairs and spares

I am close to pulling the trigger on a used ex-demo pair but there is a niggling worry. This is a big trigger to pull and I never envisaged spending this sort of money but these are without any shadow the best loudspeaker I have ever heard having spent the last two years auditioning the likes of Magico Q, Sonus Faber, Living Voice, Cessaro, Giya to mention a few. In 15 years from now when these speakers come to EOL, where will I be left if a driver/s or the DSP or one of the 36 DACs fail. Foam rot on a Beolab 8000 is now looking like a minor and easily solvable problem in comparison. B&O only stock spare parts for so long. The thought of an unserviceable 137kg speaker sends shivers down my spine!