There is no benefit to to the studio for streaming over theatrical release because the money just isn't there and never will be. That's not an opinion.
There is a benefit to the studio for streaming over Blu-ray. If you can't get their content anywhere but their service, you're more likely to subscribe to it. That means they get a regular monthly predictable income that isn't possible with disc sales and there are no manufacturing costs. But people can't afford 18 monthly subscriptions so deals will be made between the likes of Disney and Paramount so that Paramount content is shown on Disney+ and Paramount gets the lion's share, but Disney still makes additional profit.
Meanwhile, theatrical releases go on with no impact at all, unless the pandemic is infinite.