Someone ringing up to say "I need a quote for this level of usage as I think I'm into your enterprise tier" might be asking for a smaller quote than the Big Fish the BDR has sent a cold email to who's eventually been convinced to take a meeting, but they're more likely to convert and unlikely to take lots of meetings or a particularly skilled salesperson to do it...
I fully agree with what you’re saying but it doesn’t speak well of Cloudflare to have this gap. If they don’t want or handle accounts at this mid tier level, they should have a have a self service tier to handle it.