On the contrary, you can’t deliberately deceive someone in the wording of a contract, and you can’t even induce someone to enter a contract by deliberately deceiving them.
This will always be a question of interpretation. There are a lot of situations (contract or otherwise) where you can say something that might imply something else but you chose your words wisely and 'mean them'. Marketing is full of this for example as well. And it extends to contracts.
"Up to 100MBit" in the marketing material as well as the contract. When you complain that you only get 0.5MBit it's basically "buyer beware" because you bought "up to" not "always exactly" 100MBit of connectivity on a shared medium (cable). As long as it's true that the medium actually supports 100MBit there's nothing wrong with this except for it being very deceptive. This kind of thing is all over the place and a lot of people fall for it all the time. And then complain loudly but mostly toothlessly. The internet itself I guess has changed some of this as it's easier for companies to get bad enough publicity out of such things than back in the day but it's doesn't change the underlying facts and mechanics.
"Up to 100MBit" in the marketing material as well as the contract. When you complain that you only get 0.5MBit it's basically "buyer beware" because you bought "up to" not "always exactly" 100MBit of connectivity on a shared medium (cable). As long as it's true that the medium actually supports 100MBit there's nothing wrong with this except for it being very deceptive. This kind of thing is all over the place and a lot of people fall for it all the time. And then complain loudly but mostly toothlessly. The internet itself I guess has changed some of this as it's easier for companies to get bad enough publicity out of such things than back in the day but it's doesn't change the underlying facts and mechanics.