I remember seeing the commercial on TV too when I was in the DR past January... althou it was not the same company. Just like one poster here, I thought this could be an idea.
You don't need much building skills to asseble these things. They are sold to farmers and to people who own large recreational vehicles and such... they come with a book, some with a video. Inslation can also be found... they are being installed in Florida and you can see them in Texas too... so...
It's more of an organisational task. You buy land, organise your subdivision, plan streets, water and sewer and electricity (!) , parking spaces, fences and entries, waste management, form an owner association to manage coowned parts and so forth . For the units you layout the electric supply, water and sewer, pour a slab, lay your rails and pull up your arches and build a solid store front. Done. Now you just have to sell or lease them hangars.
The problem thou is, that I see to many store and industry space emty.. one reason is that the country has a hard time to attract and keep industry because of it's weak energy supply. Industry can not function off $1/KWh home brewn electircity and make money. industry that doesn't make money consitently, dies or moves out.
... J-D.