I traveled in the forest in Brasil about 6 months
That's pretty cool, under these circumstances one of the safest places even. You missed a big shit show.
In my opinion changes due to the virus already happened in the online space, at least most of them. The virus is not going anywhere even when there will be a vaccine, so these changes are here to stay. Any business, which wants to stay afloat, needs some kind of online presence now. E.g. even small restaurants were forced to deliver food and register themselves with food delivery services, mobile apps. Grocery home delivery were also booming.
The virus acted as a catalyst in many cases. Changes were already happening slowly, think about the fashion industry for instance. Online sales were constantly climbing even before the virus, but for a month or two brands were only available online, because the brick and mortar shops were closed. All the sales they made, they made online. If they had no online store, they didn't make a single cent.
Probably there is more competition now in some areas, but there are also more people, potential buyers online. When the virus situation was really bad in spring, and there were lockdowns all over the globe, a lot more people were online at any given moment than usual, which in some areas got to the point, that it broke the internet, the infrastructure couldn't handle the traffic. So yea, more competition, but also a (lot) bigger audience.
All things considered hopefully the situation won't escalate to the level, where it was in spring. We are more prepared now, we can predict things, so country-wide lockdowns, too drastic measures won't be necessary anymore.
The internet became more important than ever. On the other hand i wouldn't expect too big changes furthermore due to the virus, those already happened.