That would get you exactly three glasses from a bottle. That's… not a normal pour of wine in any country.
A standard size bottle of wine (750ml) serves five or six glasses, but the hospitality industry usually goes for five out of a bottle. 150ml (or 5oz) is what you can reasonably expect in restaurants and bars for the average glass of wine.
Do you honestly pour a third of a bottle at a time for wine?
In the UK that is a 'large' glass of wine. The NHS¹ calls 175ml 'standard' (slightly more than usual) and 125ml 'small'.
For the UK this is all not that relevant, because there the concept of the 'alcohol unit' is much more ingrained and used in public health campaigns, so you would work with those. E.g., with the recommended upper limit of 14 alcohol units, you could drink a standard glass of wine (175ml) six days of the week (12.6 units), or have a bottle of lager six days of the week and a pint of Guinness on Saturday (13.2 units).
