Airlines in Pakistan could possibly benifit from airshows.

The above videos are clips of an airshow in Montreal, Canada. It seems that even Canadian private airliners are participating in these aviation shows. Could the same work for Pakistan?

Pakistan's airlines, especially PIA the national airline is suffering financial problems and loosing passengers to Gulf careers.
Even their duty free products are hardly purchased on long haul flights at least from what I've seen.

Most Pakistani passengers do not seem to be interested in flying their country's airliners and usually opt for Gulf careers.
Perhaps a way to regain this interest instead of paying for advertisement, PIA can collaborate with Pakistani private airliners to organize public airshows to regain interest in the airliners and also a chance to sell off their unwanted duty free products such as posters, calendars, scale models and others.

The airshow must be paid for by those who attend, to cover operating costs by the airlines as well as gain them some profit and it could seriously generate more public interests in the airliners.