For god sake give a man an answer instead of saying carp about market share! It is IBM's fault for not realeasing it and something to do with trying to buy BB BES business. Ok, back to the subjectYou can install ST on BB10 but you need to sideload android version if you don't want to use BES10. Find ST 220.127.116.11 bar file on goodereader http://apps.goodereader.com/playbook/playbook-android-apps/?did=14064
and then follow this. It only takes a minute.
With new 10.2.1 OS you can get it straight away without sideloading if using other stores.
Any probs - just shout