It really depends on the type of contract. (I also did defense contracting, both bootstrapping my own and working for a larger (25-50 person) company)
I'd say overall it is beyond what an early stage startup can do (non-dod-focused), without a great partner. Selling products is a lot easier than selling ongoing services, but the profit is all in services. A lot of the difficulty was due to it being a classified contract (the work itself wasn't, but the work locations and interoperability were). It's probably feasible for a successful small business with a full time person, particularly if the business is set up to go after government from the beginning.
Big companies aren't cost-free as clients, but there's less "if you do X wrong, you could go to jail" (which essentially never happens absent willful fraud, but still). The citizenship requirements also make it really hard for tech companies.
I'd say overall it is beyond what an early stage startup can do (non-dod-focused), without a great partner. Selling products is a lot easier than selling ongoing services, but the profit is all in services. A lot of the difficulty was due to it being a classified contract (the work itself wasn't, but the work locations and interoperability were). It's probably feasible for a successful small business with a full time person, particularly if the business is set up to go after government from the beginning.
Big companies aren't cost-free as clients, but there's less "if you do X wrong, you could go to jail" (which essentially never happens absent willful fraud, but still). The citizenship requirements also make it really hard for tech companies.