I think that it's problem of money and culture; but mainly of culture. If you realise, the authorities think that to restore or to build an organ is not profitable. The cost for a restoration is almost as expensive as a new building. The authorities think that is not profitable to restorate something which will be used in the masses at sundays (sad but true!).
The church (both anglican and catholic) has money for everything and has not any money for nothing. After the restoration you have to pay for someone who plays the instruments and (depends on the weather) two times per year to tune it. Money and money...
When the authorities (both civil and religious) become convinced of the question that two organs are not the same and that an organ is something more (much more) that an amount of pipes and woods, we will have to suffer. An organ must not be only at great auditoriums (but also!) on which the cost for the instrument be profitable (concerts).
There in England, the tradition of choir singing has been retained in much more extent than in Spain. Perhap there the organs are played more frequently. Here, this tradition is dead so the organ is a museum piece.
For this I think that the restoriation is matter of culture (of of money, of couse).
Unfortunately, nowadays which is not profitable, does not exist.
Thank you very much.