Development Strategies
Why park a premium domain when you can benefit from getting it developed and maturing it in the SERPs?
Developing IDNs are no different than any other domain one may own. Domain name speculators will park a domain and wait for the big sale. In the meantime they have to keep renewing their portfolio that often costs them tens of thousands of dollars a year. Parking regular domains with good traffic can make up the renewal cost and then some if the domain had had previous traffic or search engine rankings. However, IDNs are very different. They have no rankings. They don't even have type-in traffic yet.
3 Ways I will develop Arabic IDNs and how you can benefit
[1] The Landing Page
There are IDNs that may be trademarks of have little commercial value such as say a proper name like "Smith". A landing page with 500-3000 words can be produced that would attract traffic. Once traffic starts flowing to these landing pages, they can be used to funnel traffic to other mini-sites or fully developed Arabic sites. The landing page that has a trademark will need to avoid mention of the company and focus on the term itself. Example, "Al Watan" in Arabic means "the country" but it is also the name of a popular newspaper in Kuwait. Creating landing pages for those terms will bring in good amounts of traffic and people will take notice of this IDN. With a very obvious "This domain is for sale" link, the IDN could fetch decent offers.
[2] The Mini Site
Many of the Arabic IDNs I see are not yet ripe for the Arab world due to the lack of an online economy so to speak. So highly specific keyword domains are not yet ready for fully developed sites or communities but would do well as mini-sites. A mini-site is a content/keyword rich site with anywhere from 3-10 pages depending on the topic and long-tail keywords related to the domain.
[3] The Fully Developed Website
The fully developed website, community or service is reserved for the premium domains and domains that are highly commercial in nature. There is a big difference between "Christianity", "cars" or "Ahmad". Obviously the cars domain is ripe for a fully developed car market site with straight forward and varied monetization strategies. The other two examples are not as straight forward. Christianity is not as commercial and may not attract high PPC rates as it is not commercial in nature. One can still develop that into a forum on Christianity. Once the forum gains critical mass, then advertising and sponsorships will follow. The domain "Ahmad" may have high broad search term numbers but it is not as straight forward. You could look for the most popular Arab celebrity with the same name and build a fan-site or build a vanity email service around the name. Obviously developing online marketplaces, communities and services take more effort but they also have higher upside potential.