You cannot avoid the TOS. They are all designed to protect the seller not the buyer. On top of that, you -as a single consumer- has no choice to select parts of the TOS. It's a unilateral-contract by definition.
What they say is basically:
> you have no rights
> you promise not to try and exercise any right you think you have
> you will not do anything the company doesn't like
> the company can do anything whether you like it or not
> the company is not responsible for anything ever
> we make no guarantees about anything
So yes this works _sometimes_, but not most of the time.
For the majority of users who are looking for a very specific book, not just _any_ new book to read, buying it digitally means buying it from a DRM-laden marketplace.
Of course, they have a much smaller selection than Amazon and you likely won't find the book you want. So it's not really a proper alternative. You either accept their TOS or you don't get to read the book you want digitally.