There are loads of reasons, but the main one is convenience. Each slimline can is a single-serve (200ml), so you don’t need to drink, or even worse, waste the whole bottle in one go.
Plus, corked wine will never be an issue because there is no cork. Corked wine is when the cork has been contaminated with a compound called TCA, or to give it it’s full name, trichloronanisole, which makes wine undrinkable.
There’s no risk of oxidation or reduction because wine in a can isn’t exposed to light or air.
And when it comes to storage, there are fewer breakages, it’s easier to store and quicker to chill.