I suspect that if you want to save an endangered species the thing to do is develop a taste for them. Take the alligator for example;

  A federal judge has temporarily blocked a California law banning the import and sale of alligator and crocodile products.
U.S. District Judge Kimberly J. Mueller also scheduled an April 24 hearing on Louisiana's request for a longer-lasting order called a preliminary injunction.
“The temporary restraining order is the first step in protecting Louisiana’s alligator industry, which creates jobs, supports our economy and contributes to much-needed coastal restoration efforts,” Louisiana Gov. John Bel Edwards said in a news release Friday from the state Department of Wildlife and Fisheries.
Both sides agreed to the temporary order, the California federal judge wrote. It was signed Sunday and made public Monday in online court records.

https://www.yahoo.com/news/judge-blocks-californias-alligator-ban-234111984.html

The estimated deaths of more than 25,000 koalas have left Australians fearful that the fate of the country's native animals may end in functional extinction.
Bushfires have transformed Australia’s scenic landscape to one ravaged by smoke, flames and ruin. The fires, which began in early-September, have claimed the lives of 25 people, destroyed more than 2,000 homes, and left an estimated 1 billion animals dead.

https://www.yahoo.com/gma/look-koalas-australian-culture-amid-fires-devastating-population-102536951--abc-news-topstories.html

I would suggest that if they could develop a taste for koala then they might ultimately save them from extinction.