Your OP doesn't have a value on what the new budget is, unless I read it wrong. So its hard to tell if they are going too extreme.
Fact is, the new movie did well and was received well. So doing another sequel while increasing the budget is not a bad idea if they can do more with the visuals, etc.
If they are going from 150MM to 300MM... that is more than justified. If they are going from 150MM to 800MM, then that is lunacy.
EDIT:
" Apparently, success like that earns you an equally massive budget for your follow-up, as Jurassic World 2 reportedly has an absolutely staggering budget of $260 million." ~ more info from article...
Yeah so basically doubling their budget to 260MM is not a big deal and seems to be a reasonable level of risk.







