Firehose access is prohibitively expensive. Last I heard the cost was based on something like " 30% your company's annual revenue " (this is some sort of second hand rumour I heard when I asked).
Services like gnip have everything from the firehose (ever) and it can be retrieved by paying a monthly fee (hundreds, thousand of $ for 500k twwets)
Services like gnip have everything from the firehose (ever) and it can be retrieved by paying a monthly fee (hundreds, thousand of $ for 500k twwets)