Sprint MVNO EcoMobile Waives Buh Bye to Unlimited Data Plans

Sprint MVNO EcoMobile, has quietly gotten rid of its unlimited data plans while keeping pricing the same.  New rates are now $40, $50 and $60 for 500 MB, 2.5 GB and 5 GB respectively. Previously the $40 plan was not permitted for smartphones but that has now changed with the new data allotments.  The $60 plan is the only one that operates on LTE, the other plans are 3G.  Based on Sprint's track record for paltry 3G speeds, it would seem the $60 plan is your only option here.  I'm not sure how great of a deal this really is.  Basically what seems to have happened is prices have effectively been raised without actually raising the dollar amount. Could this be a sign that EcoMobile is in financial trouble or was unlimited data simply too much for them to offer?