It's a choice, they aren't rinsing anyone. You want to have your name on a stone outside Anfield then buy one, you don't then you don't have to buy one and guess what? It'll cost you nothing to do that.
Much like the club selling LFC branded pens, hats, onesies, etc. I don't want any of that crap, but thankfully I only pay for them if I decide I do, and pay nothing for not wanting them - phew.
Come on now Al, you're not stupid and you know these two things are exceptionally different.
They are rinsing people because they are selling the items at way above their true value. Have a look at what a similar slab costs from a stonemason and the mark up is obscene. As for the choice of buying one or not what about the people who buy them as gifts for other people.
The interesting bit is why you think buying a share or two in Liverpool pre H&G and buying a slab are so different. For £500 a Dortmund fan can buy around 160 shares in his Club. He will own a part of the club, have a voice, have representation and above all he will be able to sell on his stake if he wants.
Buy a slab for Henry and Co and you own absolutely nothing, have no voice, no representation, have nothing to sell on. Indeed the only people who can sell your slab are FSG. Think about that for a second all the people who become all moral when perspective new owners are mentioned, if FSG sell to new owners they will be selling your slab on as well.
Furthermore according to the t's and C's the only way you can get your slab removed is if they have spelt the inscription incorrectly.