That's because most Israeli startups are targeted to US market because of lack of local market. Many get acquired when either they are threat to a US Industry Major or if they have saturated the market. Some get acquired for talent (Engineers from Israel are awesome) and it is easier to move Israelis to US vs trying to move Indians (Green Card waiting line for Indians is 20 years while it is instantaneous for Israelis - smart people don't want to become slaves).

One other thing most people don't realise is that life on an H1 is shit. You have to do a shitload of paperwork. You have to answer stupid questions when entering US. You have to answer stupid questions at Consulate when getting Visa. There is a lot of paperwork and uncertainty when you are changing job. No one should be stuck on h1 for 20 years. I did my 6 and am looking to get out next year if I don't get a Green Card by then.

With Indian companies, most are operating in Indian Market, are nowhere close to saturating Indian Market. I expect quite a few of them to be worth 10B or more.