Historically I’ve been slow to switch browsers. I held on too long with Internet Explorer before switching to Firefox way back when. Then stood by Firefox to long after Google had pulled their more than 1billion/year sponsorship. It’s been about 5 years since I switched to Chrome and so far there is no looking back.
I guess it would be too much to expect that any browser would dominate close to 100% such that we could see the end of cross browser rendering issues… but I guess we can dream!