Why is it too late ? And you recommend him to buy coins now when this shit is happening with ETC and ETH ? Anyway if you have money invest, but even if ethereum fail (both chains) which is highly unlikely there will always be another coin to mine with gpu, and you can just sell them afterwards...
You noobs are slow but let me try to explain. When ETH goes POS no coin can absorb the hashrate. There will be no other coin to mine for profit. Noobs lose again.