Your enterprise must market on several targeted government contracting fronts to be successful. Simply registering as a federal government contractor or acquiring a small business set aside designation does not mean that contracting officers will find you or that larger corporations will seek you out as a teaming partner. A GSA schedule or a multi-year IDIQ umbrella contract, purchase agreement or similar vehicle may look promising, but they are really no more than hunting licenses. The game must still be bagged (targeted sales of specific products or service projects to customers).
On occasion the government finds it necessary to terminate contractual arrangements with contractors. FAR Sub-part 49.5