There are no economies of scale required. This is not a commercial venture, and it's not required to be commercially viable. This is a strategic and political program, and as a jobs program it is wonderfully executed - the more to throw away, the more jobs will be required for the next iteration.
> is a strategic and political program, and as a jobs program
Jobs, yes, strategic, no. Being able to put ten birds up in a year means an adversary can blind your space capabilities, if we’re taking the argument to absurd ends.
We Americans would be defensive about ULA, probably, if it weren’t for SpaceX. The problem is the EU has no plan B. If SpaceX cuts them off, Ariana or not, they’re crippled as a spacefaring enterprise.
You're still thinking about capitalisation and the scalability of space. EU doesn't think that's a viable expansion route - already expressed my view that EU thinks 10 launches a year is more then enough to cover all bases.