Dude, you still need an open tender. And no, it does not need to be overly long.
I just did something like that myself. The time between tendering and accepting an offer was a mere two weeks.
Granted, it was only for stuff worth 25,000€ but still.
Yes, let's trust that a completely new company is experienced enough to do this.
I'm not sure why you think that established companies are completely incapable of scaling up their production. Is there some natural law which states that companies have an upper limit to their size and only new companies can be bigger? This is all very confusing and I'm not quite sure that you know what you're talking about.
To me it sounds more like you're defending Team Trump whatever come. We've been over this before: You're pathologically incapable of admitting that your best boy Boris does not smell of roses.