What they're doing is opening themselves up for trouble.yes, Vegas gets overrun with a sea of small stupid bettors for March Madness.
if you are wondering why the books shade the lines, from their point of view, why offer a favorite -4 when you can offer them -5 and still get a sea of square action -5 from people who are dumb and have no idea. This isn't a mistake by the book or an SIA type line, they know exactly what they are doing.
They're going against the market to profit more off of Mr. $20/game Tourist. When sharps come in and take the +EV side to the limits, scalping the number, they will lose long term.
Vegas is betting SIA numbers but without the $1100 limit. That's heaven to me.