Usually people welcome new business opening in their area so long as it's not something that is polluting, because these businesses can do things like provide lots of jobs to people across the income/skills spectrum and also drive investment in local infrastructure and support local organisations and charities.
In these cases the rising house prices can be a good thing because those who get positions at the new companies can buy these houses and price increases protect their investments.
Is the difference that tech companies are only providing small numbers of jobs to people with specific skills who are brought in from other areas of the country/the world?
Perhaps also tech companies are only interested in doing good on a global scale and not starting in their own back yard?