You can and they will grow but there will be less fruit than if grown on their own. Best done if you have only just planted some small soft fruit bushes or raspberry canes; but if they are mature, with their roots therefore colonising all soil around their perimeter, the strawberry plants will be unable to grow large.
The soft fruit bushes I have planted were bare rooted ones and I have only planted them a few days ago, so the ground round them looks empty and it just seems to be a waste. If I plant the stratwberries there, this year I suppose will give me a good yield but next year not so much, righ? Or it is better just to plant them on a sepearte bed of their own? Is there anything else I can grow under my soft fruit trees?
garlic is a good companion plant for raspberries, it supposedly reduces fungal disease. actually it’s a good companion for almost everything except for legumes, if i remember right.