Currently beatport urls will auto-select "purchase for download". It is possible to stream tracks on release & track pages, up to 2 minutes for free and whole (non-pre-order) tracks with a subscription (https://www.beatport.com/subscriptions). The same applies to Beatport DJ (https://dj.beatport.com/, https://dj.beatport.com/releases/3794236). Perhaps only having "streaming page" on Beatport DJ urls is more clear since Beatport is traditionally download-only and atm Beatport DJ is streaming-only