I don't think anyone has gotten set up a few days after signing up. I'm pretty sure that there's still a long backlog of people waiting for PS. I did mention that two weeks after I signed up they converted me over and that the conversion process itself took a few days.
Back to the OP's question:
What makes you think that bandwidth is a problem with shared hosting? Other than for certain individuals in Europe complaining about slow downloads (yet others are fine) and people getting bytes and bits confused , we don't really see many complaints about bandwidth here.
I think the physical servers have dual gigabit connections and michael has mentioned their redundant super-fat pipes they have to their Tier 1 providers. I haven't done the math but I think it's possible that for all practical purposes they can't exceed the available bandwidth out of a server over http without exceeding the number of open connections a server could support. And even if they could it would be an exceedingly unusual usage pattern.
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