I think that main problem on contracting market is absence of particular expert.

As a result contracting companies or self offer not what customer need but what

they can do and study at work. The last is good if you have a year or longer

contract.

To have good contractor you need organize them around big development company

or collage. But this is not possible because a know how secrets contractor can

sell to whoever.

From other side contractors hired for different purpose :

political (internal management is not responsible for result;

getting audit to control internal stuff and do not pay to it in correspondence)

as an additional hands to existing team;

as a main project force;

as a fixing existing project expert or replacement for a previously failed team.

All this in combination with existing stuff and its qualification and whole company

management culture gives us possible variants.

I believe in most cases this combination is unsuccessful specifically for a short term.