You didn't have a clue...
A Poipet casino been taken US$500,000 in 5 days when it offered regular BJ games with 1.2% rebates. 3 Japanese copunters played in term 24 hours a day for 5 days until the rebate been cancelled.
A Malaysai casino been taken US$1,000,000 in 8 months by a team of counters from the only 2 BJ tables at its VIP Room in 2006 playing 24 hours a day... the game was -0.3% off-the-top CSMs but rebated 0.7%.
A Macau casino been taken US$730,000 from its ONLY BJ table in 2007 in 6 weeks by 2 players playing 16 hours a day... the game was -0.23%, CSMs but rebates 0.75%.
The 4th casino been taken US$250,000 in 3 days from one BJ table in 2009 by one player.
You were obviously not among these persons as you didn't believe such thing existed... great game is usually burned fast no long term prospect warranted 24-hour actions before uninformned players finding out.