SriLankan will no doubt remain small potatoes for a very long time.
Why?
For the same reasons it has remained so...the infighting and backstabbing of the local pilots will continue, with no end in sight.
How do I know?
Worked there for 5 years in the early nineties as a senior expat TriStar Captain, that's how.
The expats there today will quite likely remain, and smile all the way to the bank.
The locals, on the other hand, will continue with their backstabbing ways.
I can only LOL at the situation.