So I found this article that says in 2018 it was around 17% (and rising) of employees are at an employer 10 years or more and similar for 20 years and more https://www.smh.com.au/business/workplace/we-don-t-job-hop-a...

Also note in some states where it's after 10 years you actually start accruing the leave after 7 years and if you leave the company prior to 10 years you get paid out for the amount of long service leave you have accrued. Again from the article at 5 to 10 years tenure is around 18%

Even with low participation it would be political suicide to make long service leave harder to gain or even try to take it away. Probably why Victoria actually made long service leave kick in after only 7 years.

23 years and counting... I've taken one block of 6 months long service leave (1/2 pay) and will be taking another block of a couple of years.

It all depends upon what your priorities are. Mine are working to live, with a minimum of ratrace.