You're allowed only very fractional duty cycle access. So depends on what you mean by "alternative to internet", but generally no.
At the end of the day, the client devices don't have that much broadcast power - so if you run your own LoRA gateway and are not in a densely populated area, nobody cares if you use a lot of bandwidth.
Just don't use all of the bandwidth and keep monitoring the band. You can always throttle down your clients if someone else shows up.