It's kinda The International 10 is in the cliff if it will happen in this year since 4th Dota Pro Circuit (DPC) minor and major will be cancelled.
But it's still on the Valve's decision especially if there will be 5th or more minor/major DPC tournaments before the The International 10 will happen.
This is really devastating especially for gamblers in Dota 2, less tournaments, less gambles.
See valve need to act early for the TI10 did they will continue or not, since they need preparing TI a few months before august mostly at may. What will happen if they keep continuing but went the date has come the tournament got canceled. Sure a lot people will lose money before we already buying a battle pass and valve could be losing a lot of money too since they need to pay for the stage and everything else.
I think this is a hard decision for them but in doing this they are taking the safety of their players and everyone that will be present in that tournament, And yes they will surely lose money because of the cancelation but kudos to them for not thinking about the lost but the safety of everyone, COVID-19 is a serious Pandemic disease that will surely take a lot of toll of life if not taken any precautionary measures
The Tournament could be held some other time and I think it will still continue if this virus has passed, but the life that have lost because of the virus will surely not coming back at all, lets just all think of the positive things that may happen in the future.