The software world is constantly changing. Look at the monthly-payment subscription model Adobe introduced years ago. Most people (other than businesses) don't want to pay $500 or $2000 for a piece of software, so a monthly-payment subscription plan may be the only option. Hacked software has been a problem for decades and has resulted in these new authorization methods that have become so complicated, many users wish they had never bought the software in the first place. (i.e.-Waves). Look at iOS, users complain about the cost of $10 soft-synths on iOS that compete with $300 synths on the desktop. Lots of developers there have moved to the monthly-payment subscription plan even for really inexpensive apps! The top DAW on iOS was free for a week to get more people onboard and hopefully to buy their sample-packs (Intua Beatmaker 3). The prices for top iOS apps like Cubasis & Auria Pro drop more often than stuff on Amazon. PPG, SugarBytes, etc apps on iOS with all of the functionality of their desktop apps, except they cost 90% less. Or even less during the many sales during the year in the Apple Store.
I like what Bandlab are doing. I haven't tried their iOS app yet, but it seems similar to SoundCloud from years ago, plus some things from Korg Gadget Cloud. It's free model is yet another model that many iOS DAW/Groovebox developers have adopted (Roli Noise, Auxy, Figure) where there's a community of music producers and the money-making is in the add-ons (IAPs and sample-banks).
Oh, and with the recent Facebook, Google, privacy scares, malware, etc, it's understandable if people are concerned with free software that seems too good to be true. I certainly was, so I do what I always do, install the software first on a dedicated machine and monitor the network traffic for a while. Nothing unusual so far.
BTW, all the complaining, fear-mongering, and paranoia is annoying. Good thing I'm not a developer or owner otherwise I'd think "Wow, these people are unappreciative" and scrap the whole thing and deal with the losses.