By the time Pfizer, Moderna, Sputnik, and Johnson & Johnson finish divvying up the COVID-19 vaccine market across the world,there will not be much left for AstraZeneca.
Also, after most Americans & people worldwide are vaccinated in over the next 2 to 3 years, there will be worldwide "herd immunity", and the only COVID-19 business remaining will be a few pockets of unvaccinated individuals, and maybe some booster shot business. This is not a sustainable business plan that will generate significant continuous revenue.
On the other hand, DCVax-L and DCVax Direct will generate multiple billions of dollars of revenue over the next foreseeable decades.
I believe that the Covid Vaccine is a viral vector product out of Cobra, and the CEO of CRL makes it clear that Cognate's business, and their interesting in it is the "principally GMP Cell Therapy Manufacturing" part. As he also indicated, they are "quite confident we'll get substantial returns" on their investment.