Do you think any decent consultancy is going to be willing to invest millions of £ into building a system where they will most likely be able to recover none of

Do you think any decent consultancy is going to be willing to invest millions of £ into building a system where they will most likely be able to recover none of it? OTOH , more uk government code is being released as open source. So in theory any developer could study the source and offer to fix bugs/add features and give a more accurate estimate. This might increase competition.